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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

A motorbike requires 2 litres of petrol to cover 100 kilometers. How many litres of petrol will be required to cover 250 kilometers? (using unitary method) - Mathematics

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Question

A motorbike requires 2 litres of petrol to cover 100 kilometers. How many litres of petrol will be required to cover 250 kilometers? (using unitary method)

Sum

Solution

To cover 100 km quantity of petrol required = 2 litres

∴ To cover 1 km petrol required = `2/100`

= `1/50` litres

∴ To cover 250 km petrol required = `1/50 xx 250`

= 5 litres

5 litres of petrol required to cover 250 km

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Chapter 4: Direct and Inverse Proportion - Exercise 4.1 [Page 77]

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Samacheer Kalvi Mathematics - Term 1 [English] Class 7 TN Board
Chapter 4 Direct and Inverse Proportion
Exercise 4.1 | Q 13 | Page 77
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