4/5 divided by 1/10 is 8 the answer is 8
His friend's would weigh 23.67 grams.Altogether it would be 31.56 grams.
A must be equal to b or be a multiple of b or -b in order to be an integer
example 5/5 is an integer (1)
60/5 is an integer (12) because 60 is a multiple of 5
-30/5 is an integer (-6) because -30 is a multiple of -5
