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Kofi is five times as old as kwaku. In ten years time kofi will be three times as old as kwaku.
How old are the boys.
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Let Kwaku age be x years.
Then Kofi age is 5x years.
In ten years Kofi's age will be 5x+10 years; Kwaku age will be (x+10) years.
From the condition, we have THIS equation
5x + 10 = 3*(x+10)
Simplify and find x
5x + 10 = 3x + 30
5x - 3x = 30 - 10
2x = 20
x = 20/2 = 10.
Thus Kwaku's age is 10 years. Kofi's age is 5*10 = 50 years. ANSWER
Solved and explained.
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It is hardly possible to consider 50-years old Kofi as a boy . . .
