NCERT Class 8 Mathematics Solutions: Chapter 8 – Comparing Quantities Exercise 8.2 Part 1 (For CBSE, ICSE, IAS, NET, NRA 2023)
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Question: 1 A man got 10 % increase in his salary. If his new salary is ₹ 1,54, 000 find his original salary.
Answer:
Let original salary be ₹ 100
Therefore, new salary i.e.. 10 % increase
Here, New salary = 1,54, 000
Original salary =
Hence original salary is ₹ 1,40, 000.
Question: 2 On Sunday 845 people went to the Zoo. On Monday only 169 people went. What is the percent decrease in the people visiting the Zoo on Monday?
Answer:
People went to Zoo on Sunday
People went to Zoo on Monday
Number of decrease in the people
Decrease
Hence decrease in the people visiting the Zoo is 80 % .
Question: 3 A Shopkeepers buys 80 articles for ₹ 2400 and sells them for a profit of 16 % . Find the selling price of one article.
Answer:
No. of article = 80
Cost of articles and profit
Profit
Selling price
SP of 1 article
Question: 4 The cost of an article was ₹ 15,500, ₹ 450 were spent on its repairs. If it sold for a profit of 15 % , find the selling price of the article.
Answer:
Here, C. P = ₹ 15,500 and repair cost = ₹ 450
So, total cost price
Profit
Selling price