Standard Mathematics Primary 5 Rate

A bottling machine at a Tampines factory fills 240 bottles of soya milk in 8 minutes. If the machine works at the same rate, how many bottles will it fill in 15 minutes?

A 30
B 360
C 450
D 480
Show Worked Solution

Worked Solution

Step 1: Find the rate per minute. Rate = total bottles ÷ total minutes = 240 ÷ 8 = 30 bottles per minute. Step 2: Apply the rate to the new time. Bottles in 15 minutes = rate × time = 30 × 15 = 450 bottles. Check (reverse): 450 bottles ÷ 15 minutes = 30 bottles per minute ✓, and 30 × 8 = 240 ✓. Final answer: 450 bottles. Answer: 450

Correct answer: 450

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