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Unitary Method

ICSE · Class 7 · Mathematics

Practice quiz for Unitary Method — ICSE Class 7 Mathematics. MCQs and questions with answers to test your preparation.

42 questions20 flashcards5 concepts

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Quick Quiz: Unitary Method

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1

A and B together complete a piece of work in 2 2/5 days. A alone completes the work in 4 days. How long does B alone take to complete the same work?

2

A tap fills 1/4 of a cistern in 1 hour and another tap empties 1/6 of the cistern in 1 hour. If both taps are open together, how long will the cistern take to fill when it starts empty?

3

A watch gains 42 seconds in 80 hours. How many hours will it take to gain 2 minutes 6 seconds?

4

135 kg of corn feeds 45 horses for 8 days. For how many days will the same quantity of corn feed 24 horses?

42 Questions·
multiple choicemultiple correct

Sample Questions

1multiple choice
3 marks

Ajay and Vijay together paint a hall in 6 days. Ajay alone paints it in 8 days. In how many days can Vijay alone paint the hall?

Show answer

24 days

Ajay and Vijay together paint 1/6 of the hall in 1 day. Ajay paints 1/8 of the hall in 1 day. Vijay's 1 day's work = 1/6 - 1/8 = 4/24 - 3/24 = 1/24. So Vijay alone takes 24 days.

2multiple choice
3 marks

A and B can do a piece of work in 15 days and 20 days respectively. How much work will be left after A works alone for 3 days?

Show answer

4/5 of the work

A's 1 day's work = 1/15. In 3 days, A completes 3 x 1/15 = 1/5 of the work. Work left = 1 - 1/5 = 4/5. So 4/5 of the work is left.

3multiple choice
3 marks

A man earns ₹400 in 10 days. Using the unitary method, how much will he earn in 28 days?

Show answer

₹1,120

In 10 days, earnings = ₹400. In 1 day, earnings = ₹400/10 = ₹40. In 28 days, earnings = 28 x ₹40 = ₹1,120. So the answer is ₹1,120.

4multiple choice
3 marks

0.75 m of cloth costs ₹45. What is the cost of 0.6 m of the same cloth?

Show answer

₹36

0.75 m costs ₹45, so 1 m costs ₹45/0.75 = ₹60. Then 0.6 m costs 0.6 x ₹60 = ₹36. So the answer is ₹36.

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Frequently Asked Questions

What are the important topics in Unitary Method for ICSE Class 7 Mathematics?
Unitary Method covers several key topics that are frequently asked in ICSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Unitary Method — ICSE Class 7 Mathematics?
Understand the core concepts first, then work through the 42 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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