Skip to content
Philoid
Browse Saved
Back to chapter
Maths
13. Direct and Inverse Proportions
Home · Class 8 · Maths · Ref. Book · 13. Direct and Inverse Proportions
Prev
Next
Q18 of 40 Page 13

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?

More the length of the trench, more will be the no. of men required to finish it in a day. So it is a direct proportion.


6 m = m


Let the no. of men be x,


⇒ × x = 27 × 11


⇒ x = = 44 men

More from this chapter

All 40 →
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?

17

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

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?

20

Kusum always forgets how to convert miles to kilometres and back again. However, she remembers that her car’s speedometer shows both miles and kilometres. She knows that travelling 50 miles per hour is same as travelling 80 kilometres per hour. To cover a distance of 200 km, how many miles Kusum would have to go?

Questions · 40
13. Direct and Inverse Proportions
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved