Anil mixes cocoa with sugar in the ratio 3 : 2 to prepare mixture A, and coffee with
sugar in the ratio 7 : 3 to prepare mixture B. He combines mixtures A and B in the ratio
2 : 3 to make a new mixture C. If he mixes C with an equal amount of milk to make a
drink, then the percentage of sugar in this drink will be

1. 16
2. 21
3. 17
4. 24

The number of coins collected per week by two coin-collectors A and B are in the
ratio 3 : 4. If the total number of coins collected by A in 5 weeks is a multiple of 7,
and the total number of coins collected by B in 3 weeks is a multiple of 24, then the
minimum possible number of coins collected by A in one week is