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Q. 2 (B) The Machine Boat travels 21 km in 1 hour (3 marks)

1) How much distance will it cover in 6 hours?

Answer: Use Cross Multiplication. Note here ? mark is the answer.

21 Km  ------ 1 hour

? km         -------- 6 hour

Therefore: ? x 1 = 21 x 6

Therefore Answer = 21 x 6 = 126 km in 6 hours.

2) How much time will it take to go to 168 km?

Answer: Use Cross Multiplication. Note here ? mark is the answer.

21 km ---------- 1 hour

168 km ----------? hour

Therefore Answer = 168/21 = 8 hours