on a certain the interest podatter 3 years 450 st vate interest per
. Find the sum
Let the sum principal) bep
Here 450 R-5pa.T-3 years
The sum was 3000.
the amount to be paid at the end of 3 years in each case
Meena gave an interest of 90 for two years at 9% rate p.a. What is the sum she had borrowed ?
Convert each part of the ratio to percentage :
A bag of marbles contains green, red and blue marbles in the ratio 7:8:5. Find the percentage of green
marbles in the bag.
Approximate population of India was 84 crore in 1991 and 100 crore in 2001. Find the per cent increase
The rent of a house was increased from 400 to 450. Find the per cent increase.
in the population of India from 1991 to 2001.
The maximum temperature of a city changed from 32°C to 24°C on a certain day. Find per cent increase
A shopkeeper bought a chair for 400 and sold it for * 450. Find the gain percentage.
The cost of a flower vase is 120. If the shopkeeper sells it at a loss of 10%, find the price at which it is
2. Cost of an item is 50. It was sold with a profit of 12%. Find the selling price.
>. Find the profit or loss per cent :
(b) A refrigerator bought for * 12,000 and sold for * 13,500.
(a) A skirt bought for * 200 and sold for 250.
Selling price of a toy car is 540. If the profit made by the shopkeeper is 20%, what is the cost p
(c) An almirah bought for 3,000 and sold for * 2500.
A fridge is marked at * 8900 for sale. If an off season discount of 7% is given, find the net pris
Deepak purchased a washing machine for 4450. He spent * 150 for transportation and *
repair. He sold the machine for * 6200. Find his profit or loss per cent.
4 grocer buys oranges at 12 for 10 and sells at 10 for 12. Find gain/loss per cent.
Hint : For conveniency, calculate the gain or loss for 12 x 10 = 120 oranges purchased.]
the selling price of 4 balls is the same as the cost of 5 balls, find the profit per cent.
Hint : Let the cost price of each ball be * 1.]
100
450 - 2*3*5
450 x 100
100
OU
P-3000
REVIEW QUESTIONS
1200 at 12% p.a.
in Principal
(b) Principal -7500 at 5% pa.
EXERCISE 8.3
(b) 1:3
(c) 1:4
(d) 1:25
135
or decrease.
sold.
this toy ?
fridge.
Answers
ANSWER
ANSWERInterest=450
ANSWERInterest=450Rate=5%
ANSWERInterest=450Rate=5%Time=3years
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)=
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)= 15
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)= 1545000
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)= 1545000
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)= 1545000
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)= 1545000 =3000
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)= 1545000 =3000therefore
ANSWERInterest=450Rate=5%Time=3yearsPrinciple=?Principle=(Interest×100)/(Rate×Time)=(450×100)/(5×3)= 1545000 =3000thereforesum paid after 3 years=3000+450=3450
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