Justin and David gave away the same number of stamps. Justin gave away
35 of his stamps while David gave
59 of his stamps away. Given that Justin had 14 stamps less than David at first, how many stamps did Justin have at first?
| |
Justin |
David |
| Before |
5x5 =
25 u |
9x3 =
27 u |
| Change |
- 3x5 =
- 15 u |
- 5x3 =
- 15 u |
| After |
2x5 =
10 u |
4x3 =
12 u |
The number of stamps that Justin and David gave away is the same. Make the number of stamps that Justin and David gave away the same. LCM of 3 and 5 is 15.
Number of stamps that Justin had at first = 25 u
Number of stamps that David had at first = 27 u
Number of stamps that Justin had less than David at first
= 27 u - 25 u
= 2 u
2 u = 14
1 u = 14 ÷ 2 = 7
Number of stamps that Justin had at first
= 25 u
= 25 x 7
= 175
Answer(s): 175
