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Both tanks are identical and have a base area of 56 × 32 = 1792 cm².

Tap X was turned on for 2 minutes before Tap Y.

2800 × 2 = 5600

Tap X filled the tank with 5 600 cm³ of water from 1000 to 1002.

5600 ÷ 1792 = 25/8

The height of the water was 25/8 cm.

2800 ÷ 1792 = 25/16

The height of the water rises at 25/16 cm per minute from Tap X.

3200 ÷ 1792 = 25/14

The height of the water rises at 25/14 cm per minute from Tap Y.

25/14 – 25/16 = 25/112

25/8 ÷ 25/112 = 14

It takes 14 minutes for the height in both tanks to be the same.

1002 + 14 min = 1016

(a) The water level was the same in both tanks at 10.16 am.

25/14 × 14 = 25

(b) The height of the water level in both tanks was 25 cm.

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