If a sum of Rs. 2400 grows by 1/5 of itself every year. In how many years and month will its amount be Rs. 3240?
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Answered by
1
Let the no of years be x
According to the question:
2400*(1/5)x=3240
x=(3240*5)/2400 years
x=(16200)/2400 years
x=(162/24)
x=27/4 years
x=6.75 year
.75 years into months
=.75*12
=9 months
therefore answer is
6 years and 9 months...
prernamalla8:
I am sorry but the answer is 1 year 9 months
Can you please clarify why did you multiplied 2400 by (1/5)x
because the sum is increasing by 1/5 every year and i've assumed no. of years to be x
let me try once again.
You can use the formula time (t)=(1/r){(Amount/Principal)-1}. where amount=3240, principal=2400 ,rate=1/5
by solving u'll get. t =1.75years then convert .75 years into months by multiplying it by 12 u 'll get 9 months..... so ur final answer would be 1 year and 9 months
i hope ,u r now satisfied with my answer....
Oh thank you
Please edit the answer
Answered by
0
Answer:
1 year 9 months
Step-by-step explanation:
p = 2400
A = 3240
since it is growing 1/5 every year it mean it is growing
1/5 of 2400 = 480
in 1 year it will reach to 2400+480= 2880
As shown above it is growing 480 in a year so it is growing 480/12 = 40 in a month.
3240-2880= 360
and if 360/40 = 9
Hence it will take 1 year and 9 months.
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