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Question
primary 6 | Maths
| Percentage
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Can anyone use model ruler and simple algebra method to help me solve the problem. I noticed can make use of 40 percent and one quarter to link the remainder but got stuck in someway. Tks
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Women have 2 parts here.
One part is same as men 100u
2nd part is 125
40% of women, refer to both parts.
100u -40u =60u
125-40%of 125= 75.
Imagine you have 2 cakes
Each have 10u
10u + 10u = 20u
When 40% of cake given away.
40/100= 4/10= 4u
U need to remove both
(10u -4u) + (10u-4u) = 12u
Calculation left 12u/20u x 100% = 60%. Meaning, 40% removed.
If u just remove one of the cake 4u, left 16u.
Calculation = 16u/20u x100% = 80% remaining. In other word, just 20% removed.