New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Percentage and Its Application Self Practice 8A Solution
(1) Find:
(a) 12% of 75
(ii) 120% of Rs. 30
(iii) 75% of 8 m.
(2) Express the first quantity as the percentage of the second.
(a) 8 of 32
(b) 63 of 105
(c) -8 of -64
(d) 52 of 4
(3) Find the number whose
(a) 4% is 1.8
(b) 90% is 279
(c) 120% is 90
(d) 15% is 48
(4) Write each decimal or fraction as a per cent.
(a) 0.7
(b) 0.09
(c) 3/4
(d) 11/25
(e) 8/8
(f) 37/100
(g) 0.94
(h) 19/20
(i) 0.002
(j) 198/1000
Solution:
(5) Write each percent as a decimal and as a fraction.
(a) 27%
(b) 44%
(c) 80%
(d) 112%
(6) Which is greater, 0.5 or 1/2%? Explain.
(7) Find each percent change.
(a) 50 or 60
(b) 9 to 45
(c) 400 to 300
(d) 300 to 275
(8) The cost of a books was Rs. 350. The bookseller gave me 20% discount. What amount did I pay for the book?
(9) John paid Rs. 2100 for a sweater that was 30% off. What was the original price?
Solution:
(10) a can of soup had 480 mg of sodium per serving. The sodium was reduced to 360 mg per serving so that the soup could be advertised as ‘low sodium’. What was the per cent change in sodium content?
(11) A person insures goods in his house valued at Rs. 5 lakh at the rate of 5 percent. What annual premium does he pay?
(12) The customes duty on an item is 33 1 by 3% of its value. What is the duty if the item is worth Rs. 5100?
(13) Out of 3000 candidates who appeared for an examination , 92% passed. How many passed?
Solution: (10, 12, 13, 11)
(14) A microwave is sold for Rs. 7600 after allowing a discount of 5%. Find its marked price.
(15) A football team won 8 matches out of the total number of matches they played. If their win percentage was 32, then how many matches did they play in all?
(16) During a sale, all items are available at a discount of 30%. What could be the sale price of the following?
(a) A shirt marked at Rs. 960
(b) A pair of shoes marked at Rs. 870
(c) A jacket marked at Rs. 4500
Solution:
Please write pdf clearly
Question-12 is wrong
33.1/2% =100/3
Answer is ₹1700
Please make an app in which contain pdf form