A sum of Rs. 53 is divided among A, B, C in such a way that A gets Rs. 7 more than what B gets and B gets Rs.
8 more than what C gets . The ratio of their share is :
Answer : Option B
Suppose C gets Rs. `x` . Then , B gets Rs. (`x` + 8) and ets Rs. (`x` + 15)
Then , `x + (x + 8) + (x + 15) = 53 hArr x` = 10
`:.` A + B + C = (10 + 15) : (10 + 8) : 10 = 25 : 18 : 10.
A certain amount was divided between A and B in the ratio 4 : 3 . If B's share was Rs. 4800, the total amount was :
Answer : Option A
If B's share is Rs. 3, total amount = Rs. 7.
If 'B's share is Rs.4800, total amount = Rs. `(7/3 xx 4800)` = Rs. 11200
A and B are two alloys of gold and copper prepared by mixing metals in the ratio 7 : 2 and 7 : 11 respectively . If equal quantities of the alloys are melted to from a third alloy C , the ratio of gold and copper in C will be :
Answer : Option C
Gold in C = `(7/9 + 7/18)` units = `7/6` units Copper in C = `(2/9 + 11/18)` units = `5/6` units.
`:.` Gold : Copper = `7/6 : 5/6 `= 7 : 5.