How many kg of salt at 42 P per kg must a man mix with 25 kg of salt at 24 P kg so that he may, on selling the mixture at 40 P per kg gain 25% on the outlay?
1
15
2
20
3
25
4
30
How many kg of salt at 42 P per kg must a man mix with 25 kg of salt at 24 P kg so that he may, on selling the mixture at 40 P per kg gain 25% on the outlay?