Question

Ravi eats chocolate every 5th day, and muffin every 7th day.
If today he ate both, after how many next he will eat those two together again?

• A. 45
• B. 35
• C. 30
• D. 40

Answer 1

The correct option is B 35

Next time he will eat both these together will be the LCM of the 5 and 7.

Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45...
Multiples of 7: 7, 14, 21, 28, 35, 42, 49...

LCM of 5 and 7 = 35

Thus, he will next eat both the items together after 35 days.