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13. Direct and Inverse Proportions
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Q17 of 40 Page 13

A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?

Let the distance covered by truck in 5 hours be x km


The given information in the form of table is as follows:



Given: In 25 minutes, the truck travels 14km
Now, in 5 hours the truck will travel more distance.
Therefore, above information is in direct proportion.


Therefore,


14/25 = x/300

25x = 14 × 300

→x = 168 km

More from this chapter

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15

If the thickness of a pile of 12 cardboard is 65 mm, find the thickness of a pile of 312 such cardboards.

16

In 15 days, the earth picks up kg of dust from the atmosphere. In how many days it will pick up kg of dust?

18

11 men can dig -metre-long trench in one day. How many men should be employed for digging 27-metre-long trench of the same type in one day?

19

The students of Anju’s class sold posters to raise money. Anju wanted to create a ratio for finding the amount of money her class would make for different numbers of posters sold. She knew they could raise Rs. 250 for every 60 posters sold.

(a) How much money would Anju’s class make for selling 102 posters?


(b) Could Anju’s class raise exactly Rs. 2,000? If so, how many posters would they need to sell? If not. Why?

Questions · 40
13. Direct and Inverse Proportions
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