PSLE At Jack's fruit stall,
14 of the dragonfruits were white and the rest were red. He sold
12 of the total number of dragonfruits.
25 of the dragonfruits sold were white. 99 red dragonfruits were left. How many white dragonfruits did Jack sell?
|
White |
Red |
Total |
Before |
1x5 = 5 u |
3x5 = 15 u |
4x5 = 20 u |
Change |
|
|
- 2x5 = - 10 u |
Comparing red dragonfruits and white dragonfruits sold |
- 2x2 = - 4 u |
- 3x2 = - 6 u |
- 5x2 = - 10 u |
After |
1 u |
9 u |
2x5 = 10 u |
The total number of dragonfruits is the same. Make the denominators of the total number of dragonfruits the same.
12 =
24The number of dragonfruits sold is the repeated identity. Make the number of dragonfruits sold the same. LCM of 2 and 5 is 10.
9 u = 99
1 u = 99 ÷ 9 = 11
Number of white dragonfruits that Jack sold
= 4 u
= 4 x 11
= 44
Answer(s): 44