Quantitative Aptitude Set -574
Apr 28 2025
Here we are providing new series of Quantitative Aptitude Questions for upcoming exams, so the aspirants can practice it on a daily basis.
1) Certain sum of money is invested at the rate of 20% simple interest for 5 years after which the amount is invested at the rate of 15% compound interest for 2
A.Rs.2000
B.Rs.2500
C.Rs.3000
D.Rs.4000
E.Rs.4500
2) A sum of Rs.(P+2000) is invested in SI for 2 years at 20% per annum and also a sum of Rs.(2P-4000) is invested in CI for 2 years at same rate. If the difference between the interest earned is Rs.3200, then find the value of P.
A.12000
B.15000
C.24000
D.20000
E.none of these
3) Ajay invested Rs. 56000 in two schemes A and B. Amount invested in scheme A is 33.33% more than B. Ajay earn 8% per annum from A and 10% per annum from B in simple interest. Find total interest earned by Ajay after four years.
A.Rs. 18840
B.Rs. 19740
C.Rs. 19840
D.Rs. 18740
E.None of these
4) Aman invested Rs. 1440 for 2 year at the rate of x% in the scheme X at compound interest annually and gets a total amount of Rs. 2560. If he invested Rs.3500 in scheme Y at simple interest for 6 years at same rate. Then find the total simple interest earned by Aman from scheme Y.
A.Rs. 7000
B.Rs. 8500
C.Rs. 10,200
D.Rs. 6800
E.None of these
5) The difference between the Simple Interest and Compound Interest incurred on an amount of Rs.1200 in 2 years was Rs.5.88. Find the rate of interest.
A.7%
B.8%
C.9%
D.10%
E.None of these
Answers :
1) Answer: C
SI = P * N * R/100
CA = P * (1 + R/100)n
Amount earning simple interest = P + P * 20 * 5/100 = 2P
7935 = 2P * (1 + 15/100)2
7935 = 2P * 1.3225
P = 3000
2) Answer: A
Difference between interests = Rs.3200
(2P-4000)[(1+(20/100))2-1] - ((P+2000)*2×20)/100 =3200
(2P-4000)(11/25) - (10(P+2000))/25 =3200
P=Rs.12000
3) Answer: C
Ratio of amount invested in A and B = 4:3
Amount invested in A = 4/7 x 56000 = 32000
Amount invested in Scheme B = 3/7 x 56000 = 24000
Total interest earned = 32000 x 8% x 4 + 24000 x 10% x 4 = 10240 + 9600 = Rs. 19840
4) Answer: A
Amount invested by Aman = Rs. 1440
And he gets after 2 years = Rs. 2560
Then, according to the question,
2560 = 1440 × (1 + R/100)2
256/144 = (1 + R/100)2
4/3 = (100 + R)/100
400 = 300 + 3R
R = 33 1/3%
So, the simple interest earned by Aman is,
= 3500 × 100/3 × 6/100
= Rs. 7000
5) Answer: A
Difference=Pr2/(100)2
5.88=1200* r2/100*100
5.88*10000/1200= r2
r2=49
r=7%
