Answer: Two.
Explanation:
Multiples are numbers that can be divided by that number without a remainder.
First, we can list multiples of 5 that are two digits:
10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95
Next, we can list multiples of 8 that are two digits:
16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96
Lastly, we can cross-reference these lists of multiples.
10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95
16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96
There are two two-digit numbers that are multiples of both 5 and 8.
These are 40 and 80.