25 men and 10 boys can do a piece of work in 6 days and the same work is done
by 21 men and 30 boys in 5 days. Find the ratio of work of a man to a boy.
the nesent age of father to that of his son is 7. 2. After 5 years their
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6 (25X+10Y) =5(21X+30 Y) 150X +60 Y =105 X +150 Y 45 X =90 Y X =2Y X ;work of man , Y ;work of boy X /Y =2:1
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