Chapter 5
5.64
ASSESS YOUR LEARNING
200.
(c):
Cost Price
=
×
1680
84
100
=
`
2000
Marked price
=
×
2000
115
92
%
%
=
`
2500
I
NTEREST
201.
(a):
11,400
=
6
2
100
9
3
100
14
4
100
×
×
+
×
×
+
×
×
P
P
P
×
P
=
`
12,000
202.
(c):
Hint:
First, calculate that
`
900 becomes
`
1000
in the fourth year. Calculate rate of interest by
application of simple interest formula. Thereaf-
ter, principal amount can also be calculated.
203.
(b)
204.
(a):
Hint:
First initial
R
can be calculated, and then
3
%
added to it.
205.
(a):
We can solve this question directly.
The simple interest amount ...
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