5:2:3 1:5:5 ––––––– 5:10:15⇒1:2:3 Now, CP of rasgulla =120×
3
4
=Rs90 ∴ Ratio of amounts invested in a kg of rasgulla will be 15:30:45 But clearly we can see from the quantity ratio, Sugar weight in a kg of Rasgulla =
5
10
=
1
2
kg So,
1
2
kg price of sugar = Rs 15 ⇒ 1 kg price of sugar = Rs 30