Question

Ans fast plz ...............ans correct ​

Answer 1

1.} S.I ==> P×R×T

100

==> 6400×6×2

100

=> 64×6×2

=> 768

2.} C.P => 90

S.P => 100

C.P < S.P

so , there is gain.

gain => S.P - C.P

=> 100 -90

=> 10 rs

gain % => gain × C.P

100

=> 10 × 90

100

=> 9%

Answer 2

Answer:

36. principal =Rs 6400

rate of interest =6%

time =2years

s.i= p * r* t/100

6400*6*2/100

Rs 768

37. c. p. of pen =RS 90

s. p. of pen = Rs 100

gain= s. p. -c. p.

100-90

10

gain%= gain/c.p.*100

10/90*100

11.11%