The present ratio of ages of a and b is 7: 8. 15 years ago, this ratio was 11 : 14. Find the sum total of their present ages. (a) 67.5 years (b) 63 years (c) 45 years (d) none of these (
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Let present age of A and B be 7x and 8x.
15 years ago their ages;
(7x-15)/(8x-15) = 11/14;
Or, 98x-210=88x-165
Or, 10x=45
Or, x=45/10
Or, x=4.5
Sum of the present ages =7(4.5)+8(4.5)
=67.5
hence, option A is correct answer
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15 years ago their ages;
(7x-15)/(8x-15) = 11/14;
Or, 98x-210=88x-165
Or, 10x=45
Or, x=45/10
Or, x=4.5
Sum of the present ages =7(4.5)+8(4.5)
=67.5
hence, option A is correct answer
pls follow me
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