Two quantities are in the ratio `3: 5`. i) If the smaller alone is made four times the original, what would the ratio be? ii) If the smaller is doubled and the larger 'is halved, what would the ratio be?

Explanation

Ratio of two quantities=3: 5

i) Smaller quantity is made four times,
theratio =`3 xx 4: 5=12: 5`
ii) The smaller is doụbled and the larger is halved the ratio
`=3 xx 2: 5/2=6: 5/2=12: 5=12: 5`
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