NCERT Class 7 Mathematics Model Paper 2 Questions and Answers Part 6 (For CBSE, ICSE, IAS, NET, NRA 2023)
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37. If 3 articles are sold for the cost price of 4, then what is the profit percentage?
OR
A man bought a car for ₹ 60,000 and spent 10 % of the cost of the car for the purchase of new tires. At what price should he sell the car to make a gain of 15 % ?
Ans:
Let the C. P. of 1 article = Re 1. Then, S. P. of 3 articles = C. P. of 4 article = ₹ 4 C. P of 3 articles = ₹ 3 Profit = ₹ 4 – ₹ 3 = Re 1. Profit %= 1 3 × 100 = 33 1 3 %
OR C. P of car = ₹ 60,000
Amount spent on purchase of new tires = 10 % of cost of car
Total cost price = 60,000 + 6000 = ₹ 66,000 Profit %= 15 %
The price at which he must sell the car
38. A man left 25 % of his money to his mother, 55 % to his daughter and the remaining ₹ 9000 to his brother. How much money did he leave? Find the shares of his mother and daughter.
OR
Find the value of x if
(i) 8 % of ₹ x is ₹ 100.
(ii) 32 % of x kg is 400 kg.
(iii) 35 % of ₹ x is ₹ 280.
(iv) 45 % of x marks is 405.
Ans:
Let man has initially ₹ x
Mother
Daughter
Mother՚s share
Daughter՚s share
OR
(i)
(ii)
(iii)
(iv)
39. Draw the net of:
(i) A cube
(ii) A triangular prism
(iii) A triangular pyramid
(iv) A cylinder
(i)
(ii)
(iii)
(iv)
40. ABCD is a square field of side 80 m. If EF is perpendicular to DC, find the area of ′ EDC. Also, find the area of the shaded portion.
Ans:
Area of square
Area of
So, area of shaded portion
= Area of square – Area of