Ratio and Proportion Test

Result

Ratio and Proportion Test - 1

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Question 1
1 / -0

If a car covers 85 km in 5 litres of petrol, then how much distance will it cover in 8 litres of petrol?

A
124 km

B
128 km

C
132 km

D
136 km

Solution

It is given that the car covers a distance of 85 km in 5 litres of petrol.

⇒ Distance covered by the car in 1 litre of petrol =85/5 km = 17 km

∴ Distance covered by the car in 8 litres of petrol = (8 × 17) km = 136 km

Thus, the car will cover a distance of 136 km in 8 litres of petrol.
Question 2
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Use the following information to answer the next question.

Consider the given cases.

I. The length and breadth of a rectangle.

II. The weight of a cup and its cost.

III. The area of a square and the area of a rectangle.

IV. The number of family members and their respective salaries.

The concept of ratio cannot be used for comparing the involved quantities in cases

A
I and II

B
I and III

C
II and IV

D
I and IV

Solution

Ratio is a quantity that compares one quantity relative to another only when the units of the two quantities are the same.

Case II

The weight of a cup and its cost are measured in different units.

Therefore, these quantities cannot be compared.

Case IV

The number of family members is numeric, whereas the salaries of respective family members are measured in rupees.

Therefore, these quantities cannot be compared.

Thus, the quantities involved in cases II and IV cannot be compared using the concept of ratio.