Dylan had
79 as many pens as Usha. After Dylan gave away 50 pens, he had 78 less pens than Usha. How many pens did Usha have?
|
Dylan |
Usha |
Before |
7 u |
9 u |
Change |
- 50 |
|
After |
7 u - 50 |
9 u |
Usha had 78 more pens than Dylan in the end. So, if Dylan had another 78 pens, he would have the same number of pens as Usha.
9 u = 7 u - 50 + 78
9 u - 7 u = 78 - 50
2 u = 28
1 u = 28 ÷ 2 = 14
Number of pens that Usha had at first
= 9 u
= 9 x 14
= 126
Answer: 126