Test: Direct and Inverse Proportion- 2 - Class 8 MCQ

A train of length 315m is travelling at a speed of 54 km/hour. In what time will it pass a pole?

A contractor employs a work force of 500 persons to complete construction of a bridge in six months. If he is asked to complete the work in 4 months then how many extra persons will he have to employ?

In a military camp there is a food for 30 days for 50 soldiers. Assuming that average meal of every soldier is same. If 25 more soldiers join them then how many days this food will last.

If the 45 men can do a work in 20 days. Then how many men can do the same work in 75 days?

A vegetable vendor has Rs. 2000 to buy potatoes which are available at the rate of  Rs. 8 per kg. If the price of potatoes increases by 25%, find how much potatoes he can purchase with same amount?

If 6 men can complete the wiring of a house in 7 days. In how many days 21 men can do this work.

Shabnam takes 20 minutes to reach her school at an average speed of 6 km/hour. If she is required to reach school in 24 minutes, what should be her speed?

15 men can dig a 20 meters long trench in one day. How many men should be employed for digging 140 meters long trench of the same type in one day?

Twenty-seven tons of Iron cost Rs. 540.00. Find the cost of 120 tons of Iron.

The weekly consumption of rice of a hostel with 480 students is 160 kg. Find the consumption if the number of students becomes 720.

The shadow of Qutab Minar, which is 72 m high is 80m at a particular time on a day. Find the height of an electric pole which cast a shadow of 10m under similar condition.

A man whose height is 165 cm casts a shadow of 55 cm at a particular time of the day. Find the length of shadow of a tree 33m high under similar weather conditions.