Mary sells boxes of cookies for $4 each. Henry sells boxes of cookies for $10 each. Each of them sold the same dollar amount. It was the smallest dollar amount for which this was possible.

Guest Sep 1, 2022

edited by
Guest
Sep 1, 2022

#1**0 **

It is just the least common multiple (LCM) you are looking for!

Let's check 10 first. 10 x 1 = 10. And this isn't divisible by 4 to make a whole number.

So let's check the next one for 10! 10 x 2 = 20. This IS divisible by 4 to make a whole number! 20 / 4 = 5!

So Mary sold 5 boxes of cookies to get to $20 and Henry sold 2 boxes of cookies to get to $20!

$20 is the answer!

MobiusLoops Sep 1, 2022