Tim had
710 as many coins as Usha. After Tim gave away 31 coins, he had 55 less coins than Usha. How many coins did Usha have?
| |
Tim |
Usha |
| Before |
7 u |
10 u |
| Change |
- 31 |
|
| After |
7 u - 31 |
10 u |
Usha had 55 more coins than Tim in the end. So, if Tim had another 55 coins, he would have the same number of coins as Usha.
10 u = 7 u - 31 + 55
10 u - 7 u = 55 - 31
3 u = 24
1 u = 24 ÷ 3 = 8
Number of coins that Usha had at first
= 10 u
= 10 x 8
= 80
Answer: 80
