Question

ranjana's mother gave her rs 245 for buying new year cards .if she got some 10 rupee cards,2/3 as many 5 rupee cards, and 1/5 as many 15 rupee cards, how many of each kind did she buy?

Answer 1

let the no. of 10 rupee cards be x
so price is 10x
total price of 5 rupee cards
5×2/3x = 10/3x
total price of 15 rupee cards
15×1/5x=3x
thus
10x+10/3x+3x=245
49x/3=245
x=15

Hope I could help you :)