Cole had to collect some fruits from two shops and deliver some fruits to another shop. He collected from Shop J and the ratio of starfruits to apples was 1 : 9. When he reached Shop K, he unloaded
1112 of the apples and some starfruits from his van. The ratio of starfruits to apples became 2 : 3. At Shop L, 44 starfruits and 31 apples were collected and the number of starfruits to apples became the same.
- How many fruits were there on his van after visiting Shop L?
- How many starfruits were delivered to Shop K?
|
Location |
Starfruits |
Apples |
Comparing starfruits and apples at first |
Shop J |
1x4 = 4 u |
9x4 = 36 u |
Before 1 |
Shop J |
4 u |
12x3 = 36 u |
Change 1 |
Shop K |
- ? |
- 11x3 = - 33 u |
After 1 |
Shop L |
2 u |
1x3 = 3 u |
Before 2 |
Shop L |
2x1 = 2 u |
3x1 = 3 u |
Change 2 |
Shop L |
+ 44 |
+ 31 |
After 2 |
Shop L |
2 u + 44 |
3 u + 31 |
(a)
The number of apples after unloading at Shop K is repeated. Make the number of apples left after unloading at Shop K the same. LCM of 3 and 1 is 3.
The number of apples collected at Shop J is repeated. Make the number of apples collected at Shop J the same by multiplying 9 by 4.
The number of starfruits and apples in the end is the same.
3 u + 31 = 2 u + 44
3 u - 2 u = 44 - 31
1 u = 13
Number of starfruits on his van after collecting from Shop L
= 2 u + 44
= 2 x 13 + 44
= 26 + 44
= 70
Number of fruits on his van after collecting from Shop L
= 2 x 70
= 140
(b)
Number of starfruits delivered to Shop K
= 4 u - 2 u
= 2 u
= 2 x 13
= 26
Answer(s): (a) 140; (b) 26