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Practice Test · Class 8

Direct and Inverse Proportions

10 questions randomised from the chapter. Type each final answer and submit to see your score.

00:01
0/10 attempted
01
Car at 6060 km/h takes 33 h. Time at 4545 km/h.
02
If 1212 workers finish in 99 days, how many days will 1818 workers take?
03
At speed 6060 km/h, distance in 33 h; at 8080 km/h, time for same distance.
04
Speed doubles → time?
05
44 people finish a job in 1212 days; how many people for 88 days?
06
A car covers 150150 km at 5050 km/h; time for 240240 km at same speed.
07
If 44 machines fill 200200 bottles in 11 h, how many bottles will 66 machines fill?
08
Cost of 55 pens is ₹6060: cost of 88 pens.
09
1010 pens cost \rupee250\rupee 250. Cost of 66 pens.
10
yxy \propto x; y=20y = 20 when x=5x = 5: yy when x=8x = 8.
Gyaan Maths — CBSE Class 6-10, built for board-toppers.
v1.1 · Feb 2026