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Question
primary 6 | Maths
| Percentage
One Answer Below
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How do I find the answer with a model?
Mike is 20% less. So Mike = 80u
Mike 10% increase → increase by 8u
→ 88u
Lynn 20% decrease→ decrease by 20u
→ 80u
Difference now = 88u - 80u = 8u
8u = $400
1u = $400 ÷ 8 = $50
Mike's salary in the end = 88 x $50
= $4400
For before, you can draw a model with Mike as 80u and Lynn as 100u (don't have to draw 100 boxes, just one box and write 100u will do)
For after, draw Mike as 88u and Lynn as 80u
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