1.

The weight of three heaps of gold are in the ratio 5 : 6 : 7. By what fractions of themselves must the first two be increased so that the ratio of the weights may be changed to 7 : 6 : 5 ?

Answer»

`(24)/(25),(2)/(5)`
`(48)/(50),(4)/(5)`
`(48)/(50),(3)/(5)`
`(24)/(25),(3)/(7)`

Answer :A


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