1. Amina buys a book for rs.275 and sells it at a loss of 15%. How much does she sell it for?
2. Find the amount to be paid at the end of 3 years in each case:
(a) Principal = 1,200 at 12% p.a. (b) Principal = 7,500 at 5%p.a.
3. What rate gives 280 as interest on a sum of 56,000 in 2 years?
4. If Meena gives an interest of rs.45 for one year at 9% rate p.a.. What is the sum she has borrowed?
Guys please ans these 4 questions
Answers
- CP = 275rs
loss%=15
SP = x rs
loss = CP - SP = 275-x
loss % = (275-x)/275 × 100
15 = (27500-100x)/275
4125 = 27500-100x
100x = 27500-4125
100x = 23375
x = 23375/100 => 233.75 rs
2.(a)
Principal = P = RS.1200
Rate of interest = R = 12% p.a.
Time = T = 3 years
Simple interest = PTR/100
= 1200 × 3 × 12/100
= RS.432
Therefore, amount = Principal + Interest
= RS.1200 + RS.432
= RS.1632
Ans: The amount is RS. 1632.
_____________________________________________
(b)
Principal = P = RS. 7500
Time = T = 3 years
Rate of interest = R = 5% p.a.
Simple interest = PTR/100
= 7500 × 3 × 5/100
= RS.1125
Therefore, amount = Principal + Interest
= RS. 7500 + RS.1125
= RS.8625
Ans: The amount is RS.8625.
3.SI = P×R×T/100
Rs280 = 56000×x×2/100
Rs280 = 560×2x
280/ 560 = 2x
1/2 = 2x
1/2×2=x
1/4 = x
0.25 = x
4.S.I -:45 Rs
time :- 1 year
rate :- 9%
S.I = P×R×T\100
45= P×9×1/100
P =45×100/9
P= 4500/9
P= 500 rs
Hope it helps you
Mark me BRAINLIEST....!!!!
Answer:
Step-by-step explanation:
CP=RS-275
LOSS%=15%
SP=15% OF CP
=15/100×275
=41.25
So we will subtract the loss with the cp.
275-41.25
=233.75(ANS)
2.
a.PRINCIPAL=1200
TIME=3 YEARS
RATE % PER ANNUM=12%
ACCORDING TO THE FORMULA TO FIND SIMPLE INTREST =PRINCIPAL×RATE%×TIME
=1200×3×12/100
=432=SIMPLE INTREST
AMOUNT=SIMPLE INTREST +PRINCIPAL
A=432+1200
=1632(ANS)
2.
b.P=7500
R%=5%
T=3YEARS
SI=P×R×T
=7500×5/100×3
=1125