self Maths Puzzle Logical Reasoning Blood Relations

15-mangoes and 7-apples cost as much as 10-mangoes and 9-apples. What is the ratio of cost of one
mango to cost of one apple?
a) 2:5 b) 5:2 c) 3:4 d) Cannot be determin

Read Solution (Total 2)

15m+7A=10m+9a;
5m=2a;
1m/1a=2:5
12 years agoHelpfull: Yes(7) No(1)

Take the mangoes as M and apples as A cost as C
form the followin equation by given data,
15M+7A=C------eq(1)
10M+9A=C------eq(2)
solving eq(1) and eq(2) we get
5M=2A so the ratio of cost of mango to the apple is 2:5
12 years agoHelpfull: Yes(3) No(0)

self Other Question

A bridge will collapse in 17 minutes. 4 people want to cross it before it collapses. It is a dark night and there is only one torch between them. Only two people can cross at a time. "A" takes 1 minute to cross, "B" takes 2 minutes, "C" takes 5 and "D" takes 10 minutes. How do they all cross before the bridge collapses? A person sold his watch for 96 $ and got some percentage of profit which was numerically equal to the cost
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a) 50 $ b) 54 $ c) 60 $ d) 80 $