In a box, there are some coins. Which contains 25 p, 10 p, 5 p in the ration of 1 : 2 : 3. if there are 30 rs in the box, What is the number of 10 p coins?

the ratio means that there are 1 25p coin, 2 10p coins, 3 5p coins. Now how much rupee is there in total? According to ratio 1:2:3, total rupee 1*25+2*10+3*5 =60p So if there are 60 pence in total, there are 2 10p coins. Now convert 30rs to pence and find out, using the unitary method, the number of 10p coins when there is 30rs.
Hope this helps.

Yes, your answer is helpful Yusf.. Thanks