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Question
primary 6 | Maths
| Percentage
One Answer Below
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Could someone please help without the use of algebra? Thanks so much
45% = 45/100 = 9/20
60% = 60/100 = 3/5
Fraction of money Alba had left = 1 - 9/20 = 11/20
Fraction of money Dale had left = 1 - 3/5 = 2/5
Since they had the same amount of $ left,
the number of units should be the same.
(Equal concept, you should have learnt this in P5)
Make the numerators the same.
The smallest common multiple of 11 and 2 is 22 (2 x 11, 11 x 2)
11/20 = 22/40 (multiply by 2)
2/5 = 22/55 (multiply by 11)
Difference = 55 units - 40 units = 15 units
Difference also = $450
So 15 units = $450
1 unit = $450 ÷ 15 = $30
$ they have together in the end
= 22 units x 2
= 44 units
= 44 x $30
= $1320
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