5) A certain amount was deposited into a bank account having a simple interest rate of 5%. If the total amount after 4 years was 1,500, how much was the amount deposited initially? For the same initial amount, how should the interest rate increase such that the simple interest would amount to 400?
Answers
Answer:
Appropriate Question:-
The output for a 60kg woman who runs up a 3m high flight of stairs in 3.5 sec.starting from rest but having a final speed of 2 m/s.
Given:-
Mass of woman=m=60kg.
Height=h=3m
Time=t=3.5secs.
To find :-
Here we want to calculate the output for a woman
Here first we should calculate work done first.
work \: done = mghworkdone=mgh
Applying the values,
work \: done = 10 \times 60 \times 3workdone=10×60×3
Work done= 1800Joule.
Now , lets calculate power,
power = \frac{workdone}{time \: taken}power=
timetaken
workdone
Now,
Applying the values ,
power = \frac{1800}{3.5}power=
3.5
1800
Power =514.2857 watt.
Hope it helps u mate .
Thank you .
Answer:
Step-by-step explanation:
r=5%
t=4 years
A=Rs. 1500
S.I.= P × R × T/ 100
S.I= A-P
1500- P = P × 5 × 4/ 100
1500- P = P/5
1500= P/5 + P
1500= 6P/5
1500×5/6 = P
P=Rs. 1250
S.I.2 =Rs. 400
r= ?
P=Rs. 1250
t= 4 years
r= 100 × si2/ P × t
r= 100 × 400 / 1250 × 4
r= 8%
now difference of rates= 8-5= 3
the initial rate should increase 3% to have si2 as Rs. 400.