Question

Goran must choose a number between 61 and 107 that is a multiple of 4, 5, and 8. Write all the numbers that he could choose. If there is more than one number, separate them with commas.

Answer 1

Hey there! I'm happy to help you!

The easiest way to do this is to simply write down the multiples between these numbers and see which ones are in common.

FOURS

64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104,

FIVES

65, 70, 75, 80, 85, 90, 95, 100, 105

EIGHTS

64, 72, 80, 88, 96, 104

As you can see, the multiples of five have to end with 0 or 5 in the ones place digit. As you can see, the only numbers with 0 ending with the fours is 80 and 100, but the only one with the 8s is 80. Therefore, the the only number Goran can choose is 80.

I hope that this helps!