Join now for JEE/NEET and also prepare for Boards Join now for JEE/NEET and also prepare for Boards. Register Now
Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
A certain sum of money doubles itself at simple interest in 8 years. In how many years will it be three times at the same rate A certain sum of money doubles itself at simple interest in 8 years. In how many years will it be three times at the same rate
Sum of money = pInterest = r%Time1 = 8yTime2 = t Hence, p×r×8/100 = p [As the money doubles, interest accumulated will be same as the amount of money].=> r=12.5 In the second case, p×r×t/100 = 2p [3p = p+2p(interest)]=> t = 200/r = 16. Hence, required time = 16y.
Let the principle be 100.Then amount will be 200.Interest= 100Time = 8 yrsR=?I=PRT/100100=100*R*8/100100*100/100*8=R100/8=RNOW SUM SHOULD BE 4 TIMES MEANS 400MEANS INTREST ON 100 IS 300.I=PRT/100300=100*100/8*T/100300*8/100=T24= TIN 24 YEARS SUM WILL BECOME 4 TIMES OF PRINCIPLE
Let the principle be 100.
Then amount will be 200.
Interest= 100
Time = 8 yrs
R=?
I=PRT/100
100=100*R*8/100
100*100/100*8=R
100/8=R
NOW SUM SHOULD BE 4 TIMES MEANS 400
MEANS INTREST ON 100 IS 300.
300=100*100/8*T/100
300*8/100=T
24= T
IN 24 YEARS SUM WILL BECOME 4 TIMES OF PRINCIPLE
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -