Raeann had 63 more stamps than Usha. After Usha gave away
13 of her stamps, Raeann had thrice as many stamps as Usha. How many stamps did Usha have at first?
| |
Raeann |
Usha |
Comparing Raeann
and Usha at first |
63 more |
|
| Before |
6 u |
3 u |
| Change |
|
- 1 u |
| After |
|
2 u |
Comparing Raeann
and Usha in the end |
3x2 =
6 u |
1x2 =
2 u |
The number of stamps that Raeann had at first and in the end remains unchanged. Make the number of stamps that Raeann had the same. LCM of 6 and 3 is 6.
Number of stamps that Raeann had more than Usha at first
= 6 u - 3 u
= 3 u
3 u = 63
1 u = 63 ÷ 3 = 21
Number of stamps that Usha had at first
= 3 u
= 3 x 21
= 63
Answer(s): 63
