Question

In a school, the cafeteria is painted every 2 years, the classrooms every 3 years, & the library every 4 years. All three were painted at the same time in 1962. When was the next year they were painted at the same time?

A) 1986
B) 1974
C) 1971
D) 1969​

Answer 1

the ppcm must be calculated

Series PPCM: 2.3.4 is 12

in 12 years or in 1962+12=1974

en 1974 the classrooms, the library, the cafeteria will be repainted together

Explanation:

Answer 2

1974 as according to the laws made by the government in the national judiciary convectionary