Five hours ago, a store owner started his day with some chikoos and starfruits in the ratio of 8 : 7. There were 252 starfruits. Some of the chikoos were bought by Kimberly. As a result, the number of chikoos became
34 of the starfruits.
- How many chikoos did the store owner have left?
- How many chikoos did the store owner have to buy in order to have an equal number of chikoos and starfruits?
|
Chikoos |
Starfruits |
Before |
8x4 = 32 u |
7x4 = 28 u |
Change |
- ? |
|
After |
3x7 = 21 u |
4x7 = 28 u |
(a)
The number of starfruits remains unchanged. Make the number of starfruits the same. LCM of 7 and 4 is 28.
28 u = 252
1 u = 252 ÷ 28 = 9
Number of chikoos that the store owner had left
= 21 u
= 21 x 9
= 189
(b)
Number of chikoos that the store owner had to buy to have an equal number of chikoos and starfruits
= 28 u - 21 u
= 7 u
= 7 x 9
= 63
Answer(s): (a) 189; (b) 63