Ahmad, Siti and Ravi share a sum of money in the ratio 3 : 5 : 7. Ravi receives $84 more than Ahmad. How much does Siti receive?
Show Worked Solution
Worked Solution
Step 1: Find the difference in ratio units between Ravi and Ahmad.
Ravi : Ahmad = 7 : 3
Difference = 7 − 3 = 4 units
Step 2: Find the value of 1 unit.
4 units = $84
1 unit = $84 ÷ 4 = $21
Step 3: Find Siti's share.
Siti's ratio = 5 units
Siti's share = 5 × $21 = $105
Correct answer: $105
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