Question

Walt and Amy each have the same number of pennies. Walt made equal stacks of 10 pennies with none left over. Amy made equal stacks of 8 pennies with none left over.
What is the least number of pennies that each person could have?

Answer 1

So you know that the number of pennies Walt has is a multiple of 10, and the number of pennies Amy has is a multiple of 8. Does the question say anything else, e.g. to find the smallest number of pennies they have?

Answer 2

So you know that the number of pennies Walt has is a multiple of 10, and the number of pennies Amy has is a multiple of 8. Does the question say anything else, e.g. to find the smallest number of pennies they have?

Answer 3

What is the least number of pennies that each person could have?

Answer 4

So what's the least common multiple of 8 & 10, since the number has to be a multiple of both?

Answer 5

40