Skip to content
Philoid
Browse Saved
Back to chapter
Maths
10. Direct and Inverse Variable
Home · Class 8 · Maths · Ref. Book · 10. Direct and Inverse Variable
Prev
Next
Q10 of 41 Page 10

A car can finish a certain journey in 10 hours at the speed of 48 km/hr. By how much should its speed be increased so that it may take only 8 hours to cover the same distance?

Let the speed of car be km/hr














Time (hrs)



10



8



Speed (km/hr)



48







Therefore increased speed = 60 – 48 = 12 km/hr


More from this chapter

All 41 →
8

1200 men can finish a stock of food in 35 days. How many more men should join them so that the same stock may last for 25 days?

9

In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, how long will these provisions last?

11

1200 soldiers in a fort had enough food for 28 days. After 4 days, some soldiers were transferred to another fort and thus the food lasted now for 32 more days. How many soldiers left the fort?

12

Three spraying machines working together can finish painting a house in 60 minutes. How long will it take for 5 machines of the same capacity to do the same job?

Questions · 41
10. Direct and Inverse Variable
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved