Tag: css compound interest mcqs

A. 32
B. 34
C. 36
D. 38

Solution:
Middle number = 27
Largest = 27 + 9 = 36
Answer: C

A. 6000
B. 7000
C. 8000
D. 9000

Solution:
Food = 7000, Rent = 5000 → Total = 12,000
Savings = 20,000 – 12,000 = 8000
Answer: C

A. 1500
B. 1600
C. 1700
D. 1800

Solution:
SI = (P × R × T) ÷ 100 = (5000 × 12 × 3) ÷ 100 = 1800
Answer: D

A. 162
B. 200
C. 243
D. 256

Solution:
Each term ×3 → Next = 81×3= 243
Answer: C

A. 20%
B. 22%
C. 24%
D. 25%

Solution:
CP = 80×12 = 960, SP = 80×15 = 1200
Profit = 240 → %Profit = (240/960)×100 = 25%
Answer: D

A. 30 km/h
B. 36 km/h
C. 40 km/h
D. 45 km/h

Solution:
Speed = Distance ÷ Time = 120 ÷ 12 = 10 m/s
= 10 × 18/5 = 36 km/h
Answer: B

A. 35
B. 40
C. 45
D. 50

Solution:
Let ages = 5x, 2x
After 10 yrs → (5x+10)/(2x+10) = 7/3
Cross multiply → 15x+30 = 14x+70 → x=40
Father = 5x= 50
Answer: D

A. 100
B. 150
C. 200
D. 300

Solution:
LCM(15,20,25)=300
Answer: D

A. 150%
B. 200%
C. 220%
D. 250%

Solution:
A = 0.4B → B = A ÷ 0.4 = 2.5A
So, B is 250% of A
Answer: D

A. 6.5 km/h
B. 6.8 km/h
C. 7 km/h
D. 7.5 km/h

Solution:
Time = 30/5 + 40/10 = 6+4=10 h
Total distance = 70
Average speed = 70/10= 7 km/h
Answer: C