A fruit stall had 4 times as many mangoes as pears. After 12 pears were sold, the number of mangoes became 12 times the number of the remaining pears. How many pears were there at the fruit stall at first?
| |
Mangoes |
Pears |
| Before |
4x3 =
12 u |
1x3 =
3 u |
| Change |
|
- 12 |
| After |
12 u |
1 u |
The number of mangoes remains unchanged. Make the number of mangoes the same. LCM of 4 and 12 is 12.
Number of pears in the end = 3 u - 12
3 u - 12 = 1 u
3 u - 1 u = 12
2 u = 12
1 u = 12 ÷ 2 = 6
Number of pears at the fruit stall at first
= 3 u
= 3 x 6
= 18
Answer(s): 18
