Question

After _____ years Rs.10000 will yield Rs.22600 at 18 p.c.p.a
. Time is _____ years when principal is Rs.500, rate is 7.5% and simple interest is Rs.150.

Answer 1

Answer:

1) 5 years

2) 4 years

Step-by-step explanation:

not sure about the first one though

Answer 2

Answer:

1. 7 years
2. 4 years

Step-by-step explanation:

1. as I = ptr/100

22600 - 10000 = interest = 12600

p = 10000

r = 18

t = ? = y

10000 X y X 18/100 = 12600

10000 X 9/50 X y = 12600

200 X 9 X y = 12600

1800 X y = 12600

y = 12600/1800

y = 7

therefore time = 7 years

2. as ptr/100 = I

p = 500

r = 7.5

t = ? = y

I = 150

500 X y X 7.5 /100 = 150

y X 3750/100 = 150

y X 37.5 = 150

y = 150/37.5

y = 4

therefore time = 4 years

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