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