In a mixed school there are 900 students, out of these 600 are girls. (a) Find the ratio of boys to girls. (b) What is the...

In a mixed school there are 900 students, out of these 600 are girls.
(a) Find the ratio of boys to girls.
(b) What is the percentage of boys in this school?

---

a) boys = 900 – 600= 300
ratio 3000:600
1:2
b) 300/900 x 100 = 331/3%

---

Kavungya answered the question on November 18, 2019 at 12:02

Exams With Marking Schemes

• Grade 1
• Grade 2
• Grade 3
• Grade 4
• Grade 5
• Grade 6
• Grade 7
• Grade 8
• Grade 9
• PP1
• PP2
• Playgroup
• Form 1
• Form 2
• Form 3
• Form 4

Related Questions

---

• During an annual general meeting at Elimu Mixed Day, goats and chicken were slaughtered. The number of heads for both chicken and goats were 45.... (Solved)
  

  During an annual general meeting at Elimu Mixed Day, goats and chicken were slaughtered. The number of heads for both chicken and goats were 45. The total number of legs were 100. Determine the exact number of goats and chicken slaughtered.

  Date posted: November 18, 2019 .    Answers (1)

• The diagram below represents a prism whose Cross-section is a right angled triangle. Draw the net of the solid. (Solved)
  

  The diagram below represents a prism whose Cross-section is a right angled triangle. Draw the net of the solid.
  

  Date posted: November 18, 2019 .    Answers (1)

• Simplify the equation (Solved)
  

  Simplify the equation

  Date posted: November 18, 2019 .    Answers (1)

• Evaluate the value of x in 81^x+1 + 3^4x = 246 (Solved)
  

  Evaluate the value of x in 81^𝑥+1 + 3^4𝑥 = 246

  Date posted: November 18, 2019 .    Answers (1)

• A 890kg culvert is made of a hollow cylindrical material with outer radius of 76cm and an inner radius of 62cm. It crosses a road... (Solved)
  

  A 890kg culvert is made of a hollow cylindrical material with outer radius of 76cm and an inner radius of 62cm. It crosses a road of width 3m. Determine the density of the material used in its construction in Kg/m³ correct to one decimal place.

  Date posted: November 18, 2019 .    Answers (1)

• Using logarithm table evaluate (Solved)
  

  Using logarithm table evaluate

  Date posted: November 18, 2019 .    Answers (1)

• When a certain number is divided by 48, 72 or 100 the remainder is 3 in each case. Find the number. (Solved)
  

  When a certain number is divided by 48, 72 or 100 the remainder is 3 in each case. Find the number.

  Date posted: November 18, 2019 .    Answers (1)

• Evaluate without using tables or a calculator the value of (Solved)
  

  Evaluate without using tables or a calculator the value of
  

  Date posted: November 18, 2019 .    Answers (1)

• There are 2 bags A and B. Bag A has 4 white balls and 6 red balls. Bag B has 2 white balls and 3... (Solved)
  

  There are 2 bags A and B. Bag A has 4 white balls and 6 red balls. Bag B has 2 white balls and 3 red balls. Each bag has an equal chance of being picked. If a bag is selected randomly and 2 balls picked with replacement in bag A and without replacement in bag B. Find the probability that:
  (a) They are both white
  (b) They are of different colours
  (c) At least one ball is red.
  (d) None of the balls is white.

  Date posted: November 18, 2019 .    Answers (1)

• The table below shows a monthly income tax rate for the year 2005 Peters monthly earning in 2005 were as follows: Basic salary Ksh35,600, house allowance Kshs12,000,... (Solved)
  

  The table below shows a monthly income tax rate for the year 2005
  
  Peters monthly earning in 2005 were as follows:
  Basic salary Ksh35,600, house allowance Kshs12,000, Medical allowance Kshs2,800, transport
  allowance Kshs3,400, Peter was entitled to monthly tax relief of Kshs1,056.
  Calculate:
  (a) His monthly taxable income
  (b) The monthly tax paid by Peter.
  (c) In addition to tax the following deductions were made to Peters monthly income
  - Service charge of Ksh100
  - Health insurance fund 320
  2% of his basic salary as widow and child pension . Calculate Peters net pay that month.

  Date posted: November 18, 2019 .    Answers (1)

• Kamau bought a brand new motorbike for sh75000. Its depreciation rate is estimated at 12% per annum of its value at the beginning of each... (Solved)
  

  Kamau bought a brand new motorbike for sh75000. Its depreciation rate is estimated at 12% per annum of its value at the beginning of each of the first two years and 10% per annum thereafter. What will be the value of the motorbike at the end of five years.

  Date posted: November 18, 2019 .    Answers (1)

• Evaluate (Solved)
  

  Evaluate

  Date posted: November 18, 2019 .    Answers (1)

• Find the value of x given that log(12 - 2x) - 1=log x - log 15. (Solved)
  

  Find the value of x given that log(12 − 2x) − 1=log x − log 15.

  Date posted: November 18, 2019 .    Answers (1)

• (a) Expand and simplify (3 -x)⁵ up to the fourth term (b) Use the expansion above to estimate the value of (2.98)⁵ correct to 3d.p (Solved)
  

  (a) Expand and simplify (3 −x)⁵ up to the fourth term
  (b) Use the expansion above to estimate the value of (2.98)⁵ correct to 3d.p

  Date posted: November 18, 2019 .    Answers (1)

• Given that vectors OA= -8i + 2j and OB=6i + 4j and that T divides AB in the ratio 5:3, find TB in terms of... (Solved)
  

  Given that vectors OA= −8i + 2j and OB=6i + 4j and that T divides AB in the ratio 5:3, find TB in terms of i and j.

  Date posted: November 18, 2019 .    Answers (1)

• Solve 2 Cos²x - 2 Sin x=1 for the interval 0= x = 360⁰. (Solved)
  

  Solve 2 Cos²x − 2 Sin x=1 for the interval 0≤ x ≤ 360⁰.

  Date posted: November 18, 2019 .    Answers (1)

• Three quantities A, m and n are such that A varies directly as m and inversely as the square root of n. When m=6 and n=16... (Solved)
  

  Three quantities A, m and n are such that A varies directly as m and inversely as the square root of n.
  When m=6 and n=16 A=14. Express A in term of m and n.

  Date posted: November 18, 2019 .    Answers (1)

• The image of a point P under the transformation represented by the matrix is P¹(6,3) find the co-ordinates of P. (Solved)
  

  The image of a point P under the transformation represented by the matrix
  is P¹(6,3) find the co−ordinates of P.

  Date posted: November 18, 2019 .    Answers (1)

• Cherop's farm is in the shape of a trapezium ABCD shown below. A borehole is to be drilled in the farm such that it is... (Solved)
  

  Cherop's farm is in the shape of a trapezium ABCD shown below. A borehole is to be drilled in the farm such that it is closer to AB than to side AD and closer to corner C than to corner D. Shade the region of all points where the borehole can be drilled.
  

  Date posted: November 18, 2019 .    Answers (1)

• Without using a calculator or mathematical tables simplify (Solved)
  

  Without using a calculator or mathematical tables simplify
  

  Date posted: November 18, 2019 .    Answers (1)