Class 8 Direct And Inverse Proportions CBSE Questions & Answers

Class 8 · Direct And Inverse Proportions

This is Mathematics Class 8 Direct and Inverse Proportions CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
If 32 men can reap a field in 15 days, in how many days can 20 men reap the same field?
  • A
    32 days
  • B
    28 days
  • C
    20 days
  • D
    24 days
    Correct
2
If 36 men can do a work in 25 days, in how many days will 15 men do the same work?
  • A
    64
  • B
    60
    Correct
  • C
    32
  • D
    16
3
If 4 kg of potatoes cost Rs 60, what is the cost of 12 kg of potatoes?
  • A
    Rs 200
  • B
    Rs 160
  • C
    Rs 180
    Correct
  • D
    None of these
4
A tank travels 15 km in 25 minutes. If the speed remains the same, how far can it travel in 1 hour and 5 minutes?
  • A
    32 km
  • B
    30 km
  • C
    39 km
    Correct
  • D
    None of these
5
The cost of 5 metres of cloth is Rs 350. Find the cost of 7 metres of cloth.
  • A
    Rs 490
    Correct
  • B
    Rs 140
  • C
    Rs 280
  • D
    Rs 470
6
A 14 metres stick casts a shadow of 10 metres. Find the height of a stick which casts a shadow of 15 metres under similar conditions.
  • A
    18 m
  • B
    15 n
  • C
    21 m
    Correct
  • D
    24 m
7
A train is moving with uniform speed of 80 km/hr. How far will it travel in 35 minutes?
  • A
    None of these
  • B
    46 km
  • C
    2.3 km\( - \frac{1}{5}\)
  • D
    \(46\frac{2}{3}km\)
    Correct
8
18 workers can build a wall in 26 hours, how many workers will be required to do the same work in 13 hours?
  • A
    15 hours
  • B
    None of these
  • C
    13 hours
    Correct
  • D
    17 hours
9
There are 100 students in a hostel. The food provision for them is for 15 days. How long will there provision last if 20 more join the group?
  • A
    12.5 days
    Correct
  • B
    14.5 days
  • C
    12 days
  • D
    None of these
10
12 men can dig a trench in 8 days. How many men can dig the same in 6 days?
  • A
    6 days
    Correct
  • B
    12 days
  • C
    4 days
  • D
    8 days
11
A garrison of 500 men had provision for 24 days. However, a reinforcement of 300 men arrived. How long the food will last?
  • A
    None of these
  • B
    15 days
    Correct
  • C
    18 days
  • D
    12 days
12
At 60 km/hour a car takes 2 hours to reach its destination. How long will the car take if it travels at a speed of 80 km/hr?
  • A
    2 hours
  • B
    3 hours
  • C
    None of these
  • D
    1.5 hours
    Correct
13
The number of bottles made by a factory in 63 days is 315. How many bottles can it make in 82 days?
  • A
    None of these
  • B
    390
  • C
    410
    Correct
  • D
    400
14
A road map with a scale of 1 cm represents 36 km. When Ravi drives on a road for 144 km, what would be the distance covered by him on the map?
  • A
    12 cm
  • B
    16 cm
  • C
    8 cm
  • D
    4 cm
    Correct
15
If a train is moving at a uniform speed of 75 km/hour, find the time required to cover the distance of 300 km.
  • A
    2 hours
  • B
    3 hours
  • C
    4 hours
    Correct
  • D
    5 hours