In 14 years time,a mother will be twice as old as her son. Four years ago the sum of their ages was 30 years.

Class: Form 1

Subject: Mathematics

Topic: Linear Equations

Lesson Summary

In 14 years time,a mother will be twice as old as her son.Four years ago the sum of their ages was 30 years. Find how old the mother was when the son was born.

---

More Video Lessons

---

• Use the prime factors of 1764 and 2744 to evaluate
  

  Use the prime factors of 1764 and 2744 to evaluate $\frac {\sqrt 1764}{3\sqrt 2754}$

  Date posted: February 23, 2019

• Evaluate; $\frac{-8+(-5 )x(-8)-(-6)}{-3+(-8):2 x 4}$
  

  Evaluate; $\frac{-8+(-5 )x(-8)-(-6)}{-3+(-8):2 x 4}$

  Date posted: February 23, 2019

• Solve the following
  

  Solve; $\frac{1}{4x} = \frac{5}{6x} - 7$

  Date posted: February 23, 2019

• Solve for x in : 4^x+1=32
  

  Solve for x in : 4^x+1=32

  Date posted: February 23, 2019

• The points A’(3,2) and B’(4,-1) are the images of A and B under a translation. Given that the coordinates of A are (0,1)
  

  The points A’(3,2) and B’(4,-1) are the images of A and B under a translation.Given that the coordinates of A are (0,1), find the coordinates of B.

  Date posted: February 23, 2019

• A minor arc of a circle subtends an angle of 105 degrees at the center of the circle
  

  A minor arc of a circle subtends an angle of 105 degrees at the center of the circle.If the radius of the circle is 8.4 cm,find the length of the major arc.

  Date posted: February 23, 2019

• Given that sin (x+60)⁰= cos 2x⁰.find the value of x
  

  Given that sin (x+60)⁰= cos 2x⁰.find the value of x

  Date posted: February 23, 2019

• Given the following, find b
  

  Given $a=\begin{pmatrix}4\\3\\ \end{pmatrix}$ , $c=\begin{pmatrix}-2\\-5\\ \end{pmatrix}$ and
  3a -2b +4c = $\begin{pmatrix}10\\-19\\ \end{pmatrix}$, find b

  Date posted: February 23, 2019

• Simplify the following
  

  Simplify $\frac{3}{3 - \sqrt 7}$

  Date posted: February 23, 2019

• The sides of a square are decreased by 5%. Find the percentage change in its area
  

  The sides of a square are decreased by 5%. Find the percentage change in its area.

  Date posted: February 23, 2019

• Find the sum of the first 30 terms of the series; 16+19+22……
  

  Find the sum of the first 30 terms of the series; 16+19+22……

  Date posted: February 23, 2019

• Factorize completely; a²-15ab +36b²
  

  Factorize completely; a²-15ab +36b²

  Date posted: February 23, 2019

• 1.60g of an oxide of Magnesium contain 0.84g by mass of Magnesium. Determine its empirical formula(Mg = 24.0, 16.0)
  

  1.60g of an oxide of Magnesium contain 0.84g by mass of Magnesium. Determine its empirical formula(Mg = 24.0, 16.0)

  Date posted: February 25, 2019

• Solve for the following 27^x +3^3x+1 =108
  

  Solve for the following
  27^x +3^3x+1 =108

  Date posted: February 25, 2019

• Solve the simultaneous equation 3x – 4y =10 X + 3y = -1
  

  Solve the simultaneous equation
  3x – 4y =10
  X + 3y = -1

  Date posted: February 26, 2019

• Find the value of x in (logx)² -15(logx) + 56 = 0
  

  Find the value of x in
  (logx)² -15(logx) + 56 = 0

  Date posted: February 26, 2019

• Find the equation of a line passing through (4, -3) and parallel to the line whose equation is 4y – 3x = 8.
  

  Find the equation of a line passing through (4, -3) and parallel to the line whose equation is
  4y – 3x = 8.

  Date posted: February 26, 2019

• Simplify the equation below
  

  Simplify the equation below
  

  Date posted: February 26, 2019

• Solve for X in the equation below 32^{(x - 3)} ÷ 8^{(x - 4)} = 64 ÷ 2^x
  

  Solve for X in the equation below
  32^{(x - 3)} ÷ 8^{(x - 4)} = 64 ÷ 2^x

  Date posted: February 26, 2019

• Given that a=2, b=1, and c=3, find the value of
  

  Given that a=2, b=1, and c=3, find the value of
  

  Date posted: February 26, 2019

View all video lessons