1.

In school X, the number of boys is more than that of the firls by `40%.` In school Y, the number of girls is more than that of boys by `50%.` If `50%` boys in school X is equal to `70%` of girls in school Y, what is the ratio between the number of students of school X and School Y?A. `24:25`B. `16:174`C. `3:4`D. `36:25`

Answer» Correct Answer - D
(i) In school X, let the number of boys and girls be 140x and 100x and for school Y let it be 100y and 150y.
In school X, let the number of girls = x, then number of boys `=(7x)/(5).`
(iii) In school Y, let the number of boys = y, then number of girls `=(3y)/(2).`
(iv) `(1)/(2)((7x)/(2)=(7)/(10)((3y)/(2))`


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