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primary 6 | Maths
| Fractions
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Date Posted: 1 year ago
Views: 337
Let the initial amount of money be $x.
Take note that 2/5 x = 4/7 (x-39).
Expand it out:
2/5 x = 4/7 x - 156/7
Get rid of the denominators by multiplying by their lowest common multiple, which is 35 (5 × 7).
14 x = 20 x - 780
6x = 780, x = 780 ÷ 6 = 130.
Answer is option 4 ($130).
Take note that 2/5 x = 4/7 (x-39).
Expand it out:
2/5 x = 4/7 x - 156/7
Get rid of the denominators by multiplying by their lowest common multiple, which is 35 (5 × 7).
14 x = 20 x - 780
6x = 780, x = 780 ÷ 6 = 130.
Answer is option 4 ($130).
Hi Marcus, initial amount is indeed $130. However, question is asking about the amount spent…Thank you.
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Hope this helps
Date Posted:
1 year ago
Thanks! I could understand your working clearly
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