Fill in the blanks.

Question 11 Mark

If a cyclist is travelling at a speed of 15 km/h, then the distance covered by him in 20 minutes is ……..

Answer

If a cyclist is travelling at a speed of 15 km/ h,
then the distance covered by him in 20 minutes is ……
Speed of a cyclist = 15 km/h
Distance travelled in 20 minutes $=\frac{20}{60} \times 15 km =5 km$

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Question 21 Mark

If the cost of 10 pencils is ₹ 15, then the cost of 6 pencils is ……..

Answer

If the cost of 10 pencils is ₹ 15, then the cost of 6 pencils is
Cost of 10 pencils = ₹ 15
Let cot of 6 pencils = ₹ x
10 : 6 15 : x
10x = 6 × 5
x = 3
Cost of 6 pencils = ₹ 3

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Question 31 Mark

If 8, x, 48 and 18 are in proportion then the value of x is ………

Answer

If 8, x, 48 and 18 are in proportion then the value of x is
8 : x :: 48 : 18
x = 3

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Question 41 Mark

If two ratios are equivalent, then the four quantities are said to be in ………

Answer

If two ratios are equivalent, then the four quantities are said to be in proportion.

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Question 51 Mark