Find the best tutors and institutes for Class 7 Tuition
Search in
Tell what is the profit or loss in the following transactions. Also find profit
percent or loss percent in each case.
(a) Gardening shears bought for Rs 250 and sold for Rs 325.
(b) A refrigerator bought for Rs 12,000 and sold at Rs 13,500.
(c) A cupboard bought for Rs 2,500 and sold at Rs 3,000.
(d) A skirt bought for Rs 250 and sold at Rs 150.
(a) Cost price = Rs 250
Selling price = Rs 325
Profit = 325 − 250 = Rs 75
=
= 30%
(b) Cost price = Rs 12000
Selling price = Rs 13,500
Profit = 13500 − 12000 = Rs 1500
Profit % =
= 12.5%
(c) Cost price = Rs 2500
Selling price = Rs 3000
Profit = 3000 − 2500 = Rs 500
Profit % =
= 20%
(d) Cost price = Rs 250
Selling price = Rs 150
Loss = 250 − 150 = Rs 100
Loss % =
= 40%
Convert each part of the ratio to percentage:
(a) 3:1 (b) 2:3:5 (c) 1:4 (d) 1:2:5
(a) 3: 1
Total parts = 3 + 1 = 4
1st part
2nd part = 
(b) 2: 3: 5
Total parts = 2 + 3 + 5 = 10
1st part = 
2nd part = 
3rd part = 
(c) 1: 4
Total parts =1 + 4 = 5
1st part =
2nd part =
(d) 1: 2: 5
Total parts = 1 + 2 + 5 = 8
1st part =
2nd part = 
3rd =
The population of a city decreased from 25,000 to 24,500. Find the percentage decrease.
Initial population = 25000
Final population = 24500
Decrease = 500
% decrease =
Arun bought a car for Rs 3,50,000. The next year, the price went upto
Rs 3,70,000. What was the percentage of price increase?
Initial price = Rs 350000
Final price = Rs 370000
Increase = Rs 20000
% increase =
= 
%
I buy a T.V. for Rs 10,000 and sell it at a profit of 20%. How much money do I get for it?
Cost price = Rs 10000
Profit = 20% of 10000
= Rs 2000
Selling price = Cost price + Profit
= 10000 + 2000 = Rs 12,000
​​
Juhi sells a washing machine for Rs 13, 500. She loses 20% in the bargain. What was the price at which she bought it?
Selling price = Rs 13500
Loss % = 20%
Let the cost price be x.
∴ Loss = 20% of x
Cost price − Loss = Selling price
= 16875
Therefore, she bought it for Rs 16875.
(i) Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk.
(ii) If in a stick of chalk, carbon is 3g, what is the weight of the chalk stick?
(i) Ratio of calcium, carbon, and oxygen = 10: 3: 12
As 10 + 3 +12 = 25,
Therefore, percentage of carbon =
= 12%
(ii) Let the weight of the stick be x g.
12 % of x = 3
Amina buys a book for Rs 275 and sells it at a loss of 15%. How much does she sell it for?
Cost price = Rs 275
Loss % = 15%
Loss = 15% of 275
Cost price − Loss = Selling price
275 − 41.25 = Selling price
Selling price = Rs 233.75
Find the amount to be paid at the end of 3 years in each case:
(a) Principal = Rs 1,200 at 12% p.a.
(b) Principal = Rs 7,500 at 5% p.a.
(a) Principal (P) = Rs 1200
Rate (R) = 12 % p.a.
Time (T) = 3 years
= Rs 432
Amount = P + S.I.
= 1200 + 432
= Rs 1632
(b) P = Rs 7500
R = 5% p.a.
T = 3 years
= Rs 1125
Amount = 7500 + 1125
= Rs 8625
What rate gives Rs 280 as interest on a sum of Rs 56,000 in 2 years?
Therefore, 0.25% gives Rs 280 as interest on the given sum.
If Meena gives an interest of Rs 45 for one year at 9% rate p.a.. What is the sum she has borrowed?
= Rs 500
Therefore, she borrowed Rs 500.
​​​​
How helpful was it?
How can we Improve it?
Please tell us how it changed your life *
Please enter your feedback
UrbanPro.com helps you to connect with the best Class 7 Tuition in India. Post Your Requirement today and get connected.
Find best tutors for Class 7 Tuition Classes by posting a requirement.
Get started now, by booking a Free Demo Class
