CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade VIII - Direct and Inverse Proportions
Question 1
1.
    • 7
    • men can do a work in
    • 13
    • days working
    • 5
    • hours a day.
    • In how many days can
    • 11
    • men do the same work, working
    • 6
    • hours a day?
  • 6
    19
    22
    days
  • 6
    59
    68
    days
  • 6
    59
    66
    days
  • 6
    59
    64
    days
  • 6
    61
    66
    days
Question 2
2.
The sales tax for ₹100 of a bill is ₹10. How much sales tax has to be paid for a bill of ₹225 ?
  • ₹25.50
  • ₹22.50
  • ₹27.50
  • ₹19.50
  • ₹17.50
Question 3
3.
    • A can do a piece of work in
    • 5
      days
    • ,
    • B can do the work in
    • 6
      days
    • and C in
    • 12
      days
    • respectively.
    • In how much time can they do it together?
  • 2
    days
  • 2
    2
    9
    days
  • 2
    2
    11
    days
  • 2
    4
    9
    days
  • 2
    2
    7
    days
Question 4
4.
    • The slab rates of a city's water department are as follows
    • Low Val (kl)
      -
      High Val (kl)
      Rate Rs/kl
      0
      -
      20
      16
      20
      -
      80
      21
      80
      -
      90
      26
      90
      -
      remaining
      31
    • How much amount has to be paid if the consumption is
    • 90 kl
    • .
  • ₹1840
  • ₹2080
  • ₹2010
  • ₹1620
  • ₹1790
Question 5
5.
If a train covers a certain distance at a speed of 8.02 m/sec in 35.76 sec, what should be the speed to cover the same distance in 21.36 sec?
  • 14.43 m/sec
  • 13.43 m/sec
  • 11.43 m/sec
  • 12.43 m/sec
  • 15.43 m/sec
Question 6
6.
    • If
    • 20
    • men can build
    • 1
      6
    • of a wall in
    • 43 days
    • ,
    • in how much more time is the wall completely built ?
  • 233 days
  • 215 days
  • 232 days
  • 199 days
  • 211 days
Question 7
7.
If a train travelling at 9.84 m/sec speed covers 422.33 m distance in a certain time, how much distance will it cover in the same time at speed 3.48 m/sec?
  • 150.36 m
  • 149.36 m
  • 151.36 m
  • 148.36 m
  • 147.36 m
Question 8
8.
A group of pilgrims have to cover 25 km to reach a shrine. They walk 19 km in 14 hr. At what speed they have to walk to cover the remaining distance in 9 hr ?
  • 7.67 kmph
  • 1.67 kmph
  • 2.67 kmph
  • 0.67 kmph
  • 8.67 kmph
Question 9
9.
Cost of 5 toys of TypeA is ₹40 and 20 toys of TypeB is ₹280. Out of a sum of ₹172, 11 toys of TypeA are purchased. If 8 toys of TypeB have to be purchased, how much extra amount is needed?
  • ₹33
  • ₹28
  • ₹25
  • ₹31
  • ₹23
Question 10
10.
    • A can do a work in
    • 8
      days
    • and B can do the same work in
    • 4
      days
    • .
    • If they work together, in how much time is the work completed?
  • 4
    days
  • 3
    1
    3
    days
  • 2
    2
    5
    days
  • 2
    2
    3
    days
  • 2
    days