Present ages:
Man: 3x; daughter: x
In 12 years time:
Man will be 3x + 12,
Daughter will be x + 12,
3x + 12 = 2(x + 12)
3x + 12 = 2x + 24
Their present ages are
Daughter is 12 years and man is 36 years.
johnmulu answered the question on June 8, 2017 at 06:06
-
Kamau, Weko and Suna are three casual workers in an organisation. Kamau earns twice as much as Weko and Suna earns sh 40 more than Kamau. If the total earnings are sh 1 090, Calculate the difference between Weko's and Suna's earnings.
(Solved)
Kamau, Weko and Suna are three casual workers in an organisation. Kamau earns twice as much as Weko and Suna earns sh 40 more than Kamau. If the total earnings are sh 1 090, Calculate the difference between Weko's and Suna's earnings.
Date posted:
June 8, 2017
.
Answers (1)
-
A fuel dealer makes a gain of sh 450 for every 1000 litres of petrol sold and sh 380 for every 1000
(Solved)
A fuel dealer makes a gain of sh 450 for every 1000 litres of petrol sold and sh 380 for every 1 000 litres diesel sold. In a certain month the dealer sold twice as much petrol as diesel. If the total fuel sold that month was 600 000 litres, find the dealers profit for the month.
Date posted:
June 8, 2017
.
Answers (1)
-
The greatest of the three consecutive odd numbers is (2n + 3). If their sum is 105, find the value of n.
(Solved)
The greatest of the three consecutive odd numbers is (2n + 3). If their sum is 105, find the value of n.
Date posted:
June 8, 2017
.
Answers (1)
-
Two thirds of a number added to one ninth of the number is 20 less than the number. Find the number.
(Solved)
Two thirds of a number added to one ninth of the number is 20 less than the number. Find the number.
Date posted:
June 8, 2017
.
Answers (1)
-
Two thirds of a number exceeds three fifths of the number by 40. Find the number.
(Solved)
Two thirds of a number exceeds three fifths of the number by 40. Find the number.
Date posted:
June 8, 2017
.
Answers (1)
-
Simplify $\frac{x\;-\;1}{x}$ - $\frac{2x\;+1\;}{3x}$ Hence solve $\frac{x\;-\;1}{x}$ - $\frac{2x\;+\;1}{3x}$ = $\frac{2}{3}$
(Solved)
Simplify $\frac{x\;-\;1}{x}$ - $\frac{2x\;+1\;}{3x}$ Hence solve $\frac{x\;-\;1}{x}$ - $\frac{2x\;+\;1}{3x}$ = $\frac{2}{3}$
Date posted:
June 7, 2017
.
Answers (1)
-
Find k if
(Solved)
Find k if
$\frac{4x\;-\;1}{2}$ = $\frac{14x\;+\;k}{7}$
Date posted:
June 7, 2017
.
Answers (1)
-
Solve the equation
(Solved)
Solve the equation
$\frac{3x}{2}$ - $\frac{x\;-\;1}{3}$ = $\frac{1}{2}(3x\;-\;2)$
Date posted:
June 7, 2017
.
Answers (1)
-
Solve the equation
(Solved)
Solve the equation
$\frac{1}{3}(x\;+\;4)$ - $\frac{1}{2}(2x$ - 4) = 2
Date posted:
June 7, 2017
.
Answers (1)
-
Solve the equation
(Solved)
Solve the equation
$\frac{x\;+\;1}{3} \;- \frac{x\;-\;2}{4} \;=\frac{x}{6}$
Date posted:
June 7, 2017
.
Answers (1)
-
Solve the equation
(Solved)
Solve the equation
$\frac{1}{5}(x\;+\;6)\;=\;\frac{2}{3}(2\;-\;5x)\;+ \frac{3}{4}$
Date posted:
June 7, 2017
.
Answers (1)
-
Determine x where:
(Solved)
Determine x where:
$\frac{3x}{5}\;- \frac{x\;-\;2}{3}$ = 2
Date posted:
June 7, 2017
.
Answers (1)
-
Solve for x in:
(Solved)
Solve for x in:
$x\;+\;2 = \frac{5x\;-\;1}{4}-\frac{1}{2}(x\;+\;1)$
Date posted:
June 7, 2017
.
Answers (1)
-
Three years ago, a father was three times as old as his son. In three years time, the sum of their ages will be 76 years. Determine their present ages.
(Solved)
Three years ago, a father was three times as old as his son. In three years time, the sum of their ages will be 76 years. Determine their present ages.
Date posted:
March 10, 2017
.
Answers (1)
-
A motorist took 2$\frac{3}{4}$ hours to travel from town A to town B. If he started the journey at 10.30 a.m, determine the time the journey ended in
(Solved)
A motorist took 2$\frac{3}{4}$ hours to travel from town A to town B. If he started the journey at 10.30 a.m, determine the time the journey ended in
i) 24 hour clock system.
ii) 12 hour clock system
Date posted:
March 10, 2017
.
Answers (1)
-
A mathematics speed test started at 8.40 a.m and ended at 9.20 a.m. How long was the speed test
(Solved)
A mathematics speed test started at 8.40 a.m and ended at 9.20 a.m. How long was the speed test
Date posted:
March 10, 2017
.
Answers (1)
-
A metal P is an alloy of two metals Q and R. Metal Q has a mass of 70 g and a density of 16 g/cm3. Metal R has a mass of 19 g and a density of 4 g/cm3. Find the density of the alloy
(Solved)
A metal P is an alloy of two metals Q and R. Metal Q has a mass of 70 g and a density of 16 g/cm3. Metal R has a mass of 19 g and a density of 4 g/cm3. Find the density of the alloy.
Date posted:
March 10, 2017
.
Answers (1)
-
A liquid has a mass of 6 200 kg and a density of 760 kg/m3. Find its volume.
(Solved)
A liquid has a mass of 6 200 kg and a density of 760 kg/m3. Find its volume.
Date posted:
March 10, 2017
.
Answers (1)
-
Cheserem, Otieno and Kariuki divided 500 eggs among themselves in the ratio 14:5:6 respectively. Later, Cheserem gave 20 eggs to Otieno and 20 eggs to Kariuki. Find the ratio of eggs that they finally got
(Solved)
Cheserem, Otieno and Kariuki divided 500 eggs among themselves in the ratio 14:5:6 respectively. Later, Cheserem gave 20 eggs to Otieno and 20 eggs to Kariuki. Find the ratio of eggs that they finally got
Date posted:
March 10, 2017
.
Answers (1)
-
Simplify:
$\frac{(6a + b)(a+ b) - 7b(a + b)}{2a^2 - 2b^2}$
(Solved)
Simplify:
$\frac{(6a + b)(a+ b) - 7b(a + b)}{2a^2 - 2b^2}$
Date posted:
March 9, 2017
.
Answers (1)