There are a total of 120 keys in the keyboard and the keys are arranged in 5 rows, each row contains an equal no. of keys. Find the no. of keys in one row?

Given:

Total no. of keys = 120

Total no. of rows = 5

To find:

No. of keys in one row

Solution:

Total no. of keys = 120

Total no. of rows = 5

No. of keys in one row = $120÷5 = 24$

Let's check

Total no. of rows = 5

No. of keys in one row = 24

Total no. of keys = $24\times 5 = 120$

Therefore there are 24 keys in one row.

Hence option(B) is correct.