Four hours ago, a fruit seller started his day with some starfruits and mangoes in the ratio of 8 : 3. There were 45 mangoes. Some of the starfruits were bought by Zara. As a result, the number of starfruits became
25 of the mangoes.
- How many starfruits did the fruit seller have left?
- How many starfruits did the fruit seller have to buy in order to have an equal number of starfruits and mangoes?
|
Starfruits |
Mangoes |
Before |
8x5 = 40 u |
3x5 = 15 u |
Change |
- ? |
|
After |
2x3 = 6 u |
5x3 = 15 u |
(a)
The number of mangoes remains unchanged. Make the number of mangoes the same. LCM of 3 and 5 is 15.
15 u = 45
1 u = 45 ÷ 15 = 3
Number of starfruits that the fruit seller had left
= 6 u
= 6 x 3
= 18
(b)
Number of starfruits that the fruit seller had to buy to have an equal number of starfruits and mangoes
= 15 u - 6 u
= 9 u
= 9 x 3
= 27
Answer(s): (a) 18; (b) 27