Advanced Mathematics Primary 3 Addition and Subtraction

Ravi had $3.50 on his EZ-Link card. He topped up $20.00 at Bishan MRT station. He then used $2.40 to travel to school and another $2.40 to travel home. His mother later topped up an additional $10.00 on his card. How much money is on Ravi's EZ-Link card now?

A $28.70
B $31.10
C $33.50
D $25.20
Show Worked Solution

Worked Solution

Step 1: Find the balance after the first top-up. $3.50 + $20.00 = $23.50 Step 2: Subtract the fare for the trip to school. $23.50 − $2.40 = $21.10 Step 3: Subtract the fare for the return trip home. $21.10 − $2.40 = $18.70 Step 4: Add the second top-up from his mother. $18.70 + $10.00 = $28.70 Ravi has $28.70 on his EZ-Link card.

Correct answer: $28.70

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