A fruit seller had the same number of mangoes, chikoos and grapefruits at first. After 137 grapefruits, some mangoes and chikoos were used, there were 125 fruits left. There were four times as many mangoes as chikoos left. The number of grapefruits left was 19 fewer than the number of mangoes. How many chikoos were used?
| |
Mangoes |
Chikoos |
Grapefruits |
Total |
| Before |
1 |
1 |
1 |
|
| Change |
- ? |
- ? |
- 137 |
|
| After |
4 u |
1 u |
4 u - 19 |
125 |
Total number of fruits in the end
= 4 u + 1 u + 4 u - 19
= 9 u - 19
9 u - 19 = 125
9 u = 125 + 19
9 u = 144
1 u = 144 ÷ 9 = 16
Number of grapefruits at first
= 4 u - 19 + 137
= 4 x 16 - 19 + 137
= 64 - 19 + 137
= 182
The number of chikoos and grapefruits at first was the same.
Number of chikoos used
= 182 - 1 u
= 182 - 16
= 166
Answer(s): 166
