Xavier and Julie share some stamps.
56 of Xavier's stamps is equal to
513 of Julie's stamps. Given that Julie has 21 stamps more than Xavier, how many stamps do they have altogether?
56 of Xavier's stamps = 513 of Julie's stamps
Number of Xavier's stamps = 6 u
Number of Julie's stamps = 13 u
Number of stamps that Julie has more than Xavier
= 13 u - 6 u
= 7 u
7 u = 21
1 u = 21 ÷ 7 = 3
Total number of stamps
= 6 u + 13 u
= 19 u
= 19 x 3
= 57
Answer(s): 57
