Michael D. answered • 07/17/19

Versatile STEM tutor eager to teach

99999 / 77 = 1298.69

99999 / 78 = 1282.03

You can ignore the decimals since you are only looking for how many multiples of the number there are in 99999.

Now the question is, how many numbers are divisible by 78 and 77. If we multiply 77 & 78, we know the common denominator of all integers that are divisible by both 78 & 77.

77 * 78 = 6006

99999 / 6006 = 16.65

Thus, you have the following!

**The girl collected 1282**

**The boy collected 1298 - 16 = 1282**

**The boy & girl collected the same amount of numbers...**