Question

-
Ex. 7. If the simple interest on a certain SUM UI MOJ
the rate of interest per annum.
Sol. Let the principal (P) = x
x
Then,
S.I. =
T= 2 years
5
PxRxT
Using the formula S.I. =
we get
100
xx R x2
* x 100
R=
= 10% p.a.
5 100
5x * x 2
EXERCISE 9 (E)
Find the simple interest and the amount at simple interest in problems from 1 through 4:
1
1. * 184 for 2 years at 5% p.a.
2. 3600 for 5 years at 12% p.a.
2
3. 350 for 4 years at 6% p.a.
4. 960 for 3 years at 5% p.a.
2
5. Vineet deposited *8500 in a finance company which pays 18% interest per year. Find the ar
will receive after 3 years.
6. A farmer borrowed 3600 at 15% interest per annum. At the end of 4 years he cleared his a
paying 4000 and a cow. Find the cost of the cow.
7. Find the rate per cent per annum if:
(1) 350 yields 105 interest in 6 year. (ii) *425 yields 238 interest in 8 years.​

Answer 1

Answer:

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Step-by-step explanation:

Ex. 7. If the simple interest on a certain SUM UI MOJ

the rate of interest per annum.

Sol. Let the principal (P) = x

x

Then,

S.I. =

T= 2 years

5

PxRxT

Using the formula S.I. =

we get

100

xx R x2

* x 100

R=

= 10% p.a.

5 100

5x * x 2

EXERCISE 9 (E)

Find the simple interest and the amount at simple interest in problems from 1 through 4:

1

1. * 184 for 2 years at 5% p.a.

2. 3600 for 5 years at 12% p.a.

2

3. 350 for 4 years at 6% p.a.

4. 960 for 3 years at 5% p.a.

2

5. Vineet deposited *8500 in a finance company which pays 18% interest per year. Find the ar

will receive after 3 years.

6. A farmer borrowed 3600 at 15% interest per annum. At the end of 4 years he cleared his a

paying 4000 and a cow. Find the cost of the cow.

7. Find the rate per cent per annum if:

(1) 350 yields 105 interest in 6 year. (ii) *425 yields 238 interest in 8 years.