Category: Mathematics

A. Simple Interest
B. Compound Interest
C. Both equal
D. Depends on 𝑃

Answer: B

A. 44%
B. 50%
C. 56%
D. 60%
Answer: A

Why:

1−(0.8×0.7)=0.44

A. Selling price
B. Marked price
C. Cost price
D. Discount

Answer: C

A. No change
B. Always an increase
C. Always a decrease
D. Depends on the numbers

A. Their product is constant
B. Their ratio is constant
C. Both increase by the same amount
D. Both decrease by the same amount

Answer: B

A. Adding the same number to both terms keeps the ratio unchanged
B. Multiplying both terms by the same non-zero number keeps the ratio unchanged
C. Dividing only the first term by a number keeps the ratio unchanged
D. Subtracting the same number from both terms keeps the ratio unchanged

Answer: B
Why: Ratios are scale-invariant under common multiplication/division.

a) 40

b) 50

c) 60

d) 70

Solution:

25÷100×200 = 0.25
200 = 50
Answer: 25% of 200
= 50

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