JMI BEd PYQ 2025 || Jamia BEd Previous Year Question with Explanation

Q. 121. A and B together finish a job in 12 days; B alone in 30 days. How long for A alone?

(A) 18 days

(B) 20 days

(D) 42 days

Answer:

Explanation:

The combined rate is 1/12. B’s rate is 1/30. A’s rate is

1/12 – 1/30 = (5-2)/60 = 3/60 = 1/20

. Thus, A alone takes 20 days.

Q. 122. A square’s area is $225 m^2$ ; its perimeter is 10 m less than that of a rectangle whose breadth is 15m. What is the rectangle’s area?

(A) $150 m^2$

(B) $300 m^2$

(D) $425 m^2$

Answer:

(B)

300 m^2

Explanation:

The square’s side is

\sqrt{225} = 15 m

, so its perimeter is

4 \times 15 = 60 m

. The rectangle’s perimeter is 70 m. With a breadth of 15 m,

2(L + 15) = 70 \Rightarrow L = 20 m

. The rectangle’s area is

20 \times 15 = 300 m^2

Q. 123. If a circle’s radius increases by 50%, its area increases by:

(A) 50%

(B) 75%

(D) 125%

Answer:

Explanation:

An increase of 50% means the radius is multiplied by 1.5. Area is proportional to

r^2

, so the new area is

1.5^2 = 2.25

times the original. This is a 125% increase.

Q. 124. A dealer buys a watch for ₹225 and spends ₹15 on repairs. He sells it for ₹300. What is his profit percentage?

(A) 20%

(B) 25%

(D) 60%

Answer:

Explanation:

Total cost price =

225 + 15 = ₹240

. Selling price = ₹300. Profit = ₹60. Profit percentage =

(60/240) \times 100 = 25\%

Q. 125. A refrigerator is sold for ₹36,000, resulting in a 20% loss. To recover this loss, a washing machine is sold at a profit equal to the loss incurred on the refrigerator. If the washing machine is sold at its cost price, what should its selling price be to recover the refrigerator’s loss?

(A) ₹39 000

(B) ₹45 000

(D) ₹68 000

Answer:

Explanation:

Loss on the refrigerator is 20% of CP (

0.8 CP = 36000 \Rightarrow CP = 45000

), so the loss is ₹9,000. To recover this loss, the washing machine (assumed to share the same ₹45,000 cost price in this problem context) must be sold for

45,000 + 9,000 = ₹54,000

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