Page 139 - Start Up Mathematics_7

7. If ` 4,800 is borrowed at the rate of 5% p.a., the amount to be returned at the end of 2 years
is:

(a) ` 480 (b) ` 5,280 (c) ` 5,300 (d) ` 6,000
8. If the salary of an employee has increased by 200% in the last five years, it means the salary
has become:
(a) 2 times (b) 3 times (c) 4 times (d) 200 times
9. If 2 : 4 = 24 : x, then the value of x is:

(a) 48 (b) 24 (c) 12 (d) 40

solve Mentally
True or False

1. The ratio of two quantities is possible if they are in the same units.
2. To compare the rate of change in two quantities expressed in different units, we use proportion.

3. The number 40% of 50 is not equal to the number 50% of 40.

4. If the rate of interest is doubled keeping other things same, then the simple interest also
doubles.
5. Profit or loss percent is always calculated on C.P.

6. Extra money paid for the use of borrowed money is called interest.

7. Amount = Principal – Interest

Fill in the Blanks
100qr
1. The value of p% of p is _________.

2. If two quantities increase or decrease at the same rate, then they are in __________________.
3. If one quantity increases and the other quantity decreases at the same rate, then they are said
to be in __________________.
4. Vani bought a toy with a discount of 20% on the marked price of ` 1,480. Vani paid ________
for the toy.

5. If a certain sum of money doubles itself in 5 years, then the rate of simple interest is _______.
6. If a shopkeeper makes a loss, then his S.P. should be _________ than C.P.
1
7. Mixed fraction 4 converted to percentage form is _________.
2
8. 1 is _________ percent of 4.

Answer in One Word or a Line
260 510
1. Which is a greater percentage or ?
500 1,000
2. What is the formula to calculate simple interest?

3. How can we convert percentage to decimals?
4. Is 200% of 1 equal to 1% of 200?

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