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primary 5 | Maths
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Date Posted: 5 years ago
Views: 201
Let J represent Jamal's money at first.
Let K represent Kamil's money at first.
After Jamal spent 4/5 of his money and Kamil spent 3/4 of his money, Jamal had $30 more than Kamil.
Therefore, 1/5 J = 1/4 K + $30
Multiply by 5 on both sides:
J = 5/4 K + $150
We also know that J + K = $393.
Substitute:
9/4 K + $150 = $393
9/4 K = $243
K = $108
Hence, Kamil had $108 at first.
Let K represent Kamil's money at first.
After Jamal spent 4/5 of his money and Kamil spent 3/4 of his money, Jamal had $30 more than Kamil.
Therefore, 1/5 J = 1/4 K + $30
Multiply by 5 on both sides:
J = 5/4 K + $150
We also know that J + K = $393.
Substitute:
9/4 K + $150 = $393
9/4 K = $243
K = $108
Hence, Kamil had $108 at first.
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