Question

Three brands A, B and C of biscuits are available in packets of 12,15 and 21 biscuits
respectively. If a shopkeeper wants to buy an equal number of biscuits, of each brand, what is the
minimum number of packets of each brand,he should buy?

Answer 1

Answer:

least common factor for 12,15,21

so we get answer is 420

Answer 2

Your required answer is in the attachment