Question

Help please. Is there any other method than using each option and checking?

Mr Raghu bought a total of 300 red&black beads in separate boxes. All the boxes with red beads had the same number of beads while all the boxes with black beads had 70 beads in each box. Which is not the possible number of red beads?

1)30
2)32
3)36
4)45

Answer 1

Answer:

the answer is 45 ,I think so