PSLE At Pierre's fruit stall,
56 of the dragonfruits were white and the rest were red. He sold
13 of the total number of dragonfruits.
45 of the dragonfruits sold were white. 15 red dragonfruits were left. How many white dragonfruits did Pierre sell?
|
White |
Red |
Total |
Before |
5x5 = 25 u |
1x5 = 5 u |
6x5 = 30 u |
Change |
|
|
- 2x5 = - 10 u |
Comparing red dragonfruits and white dragonfruits sold |
- 4x2 = - 8 u |
- 1x2 = - 2 u |
- 5x2 = - 10 u |
After |
17 u |
3 u |
4x5 = 20 u |
The total number of dragonfruits is the same. Make the denominators of the total number of dragonfruits the same.
13 =
26The number of dragonfruits sold is the repeated identity. Make the number of dragonfruits sold the same. LCM of 2 and 5 is 10.
3 u = 15
1 u = 15 ÷ 3 = 5
Number of white dragonfruits that Pierre sold
= 8 u
= 8 x 5
= 40
Answer(s): 40