Question

Sarita bought eggs at Rs.8.40 a dozen .At what price per ream should she sell them so as to earn a profit of 15%

Answer 1

Cost of 1 egg = 
8.40/12 =  Rs 0.7
Cost of 100 eggs =
0.7 * 100
= Rs 70
It costs Rs 70 for buying 100 eggs.
15/100 * 70
= 10.5
70 + 10. 5
= Rs 80.5