Question

a sweet seller has 420 kaju barfis and 130 badam barfis he wants to stack them in such way the each stack has the same number, and they take up the least area of the tray. he takes help of his friend for this who told that he can make stacks of 10 for both kinds of barfi.
1.sweet seller friend might have used which of the method(s) to solve the given problem.
a)hit and trail
b) highest common factors
c)both a and b
d)least common multiple​

Answer 1

Answer:

Maximum no. of barfis can be placed = HCF of 420 n 130

                                                              = 10

OPTION B : highest common factor