Question

at a local bakery all loaves of wheat bread come with 19 slices, while all loaves of rye bread come with 20 slices. if grayson bought the same number of slices of each type of bread, what is the smallest number of slices of each type that grayson could have bought

Answer 1

This is a question on LCM.

We therefore need the LCM of 19 and 20.

19 itself is a prime number so its prime factors are :

19

The prime factors of 20 are :

20 = 2 × 2 × 5

The LCM of 19 and 20 is :

20 × 19 = 380

Answer :

The smallest number of slices to be bought is thus 380