The ratio of ages of Suraj and Mohan 4 years ago
was 7:8 and after 5 years from now, their ratio will
become 10:11. Find the present age of Suraj ?
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Step-by-step explanation:
Suraj's age 4 years ago = 7x
Mohan's age 4 years ago = 8x
Suraj's age 5 years from now = 7x + 9
Mohan's age 5 years from now = 8x + 9
given 7x + 9/8x + 9 = 10/11
=> 11(7x + 9) = 10(8x + 9)
=> 77x + 99 = 80x + 90
=> 99 - 90 = 80x - 77x
=> 9 = 3x
=> x = 3
therefore Suraj's present age 7x + 4
=> 7×3 + 4 => 25 years
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