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WorksheetsDirect and Inverse Proportions Class-8
Total questions: 10
Worksheet time: 10mins
If X and Y are directly proportional, then which of the following is correct?
X – Y = constant
X/Y = constant
XY = constant
X + Y = constant
If X and Y are inversely proportional, then which one is true?
X1/Y1 = X2/Y2
X1/X2 = Y2/Y1
X1/X2 = Y2/Y1
X1/X2 = Y1/Y2
If X = 15 and Y = 1/30, then x and y are:
Directly proportional
Inversely proportional
Neither directly nor inversely proportional
Cannot be determined
Manvi types 120 words in 30 minutes. How many words she will type in 12 minutes?
(a)
6 pipes are required to fill a tank in 80 minutes. How long will it take if only 5 pipes of the same type are used?
(a)
If 12 labours can construct a road in 50 hours, how many labours will be required to construct the same road in 40 hours?
10
12
14
15
What type of proportion does the table represent?
Direct
Inverse
I dont' know
48 men were deployed to construct a bridge in 30 days.
How many days does it take for 8 men to construct the same bridge?
5
10
180
200
A car takes 18 hours to ride 720 km. Time taken by the car to travel 360 km ?
(a)
