Let the selling price of each article be Rs. 1. Then, selling price of 100 articles= Rs. 100, profit on selling 100 articles= Rs. 75, and cost of 100 articles=100-75 = Rs.25

Correct Option: C

Let the selling price of each article be Rs. 1. Then, selling price of 100 articles= Rs. 100, profit on selling 100 articles= Rs. 75, and cost of 100 articles=100-75=Rs.25
Therefore, profit percentage=(75 / 25) x 100=300%

Let the cost of the table be Rs. x and the cost of the chair = Rs. y

From 1st condition,
2x = 5y

From 2nd condition
x - y = 1200

Correct Option: C

Let the cost of the table be Rs. x and the cost of the chair = Rs. y

From 1st condition,
2x = 5y
⇒ x= 5y/2

From 2nd condition
x - y = 1200
⇒ (5y / 2) - y = 1200
3y / 2 = 1200
y = Rs. 800

∴ 1 kg = 1000 grams
∴ 1/4 kg = 1000x1/4 = 250grms

Correct Option: B

1 kg = 1000 grams
∴ 1/4 kg = 1000 / 4 = 250 grams
Now Cost for 200 grams = (200 / 250 ) x 60 paise
= 48 paise

∵ 1 dozen = 12
⇒ 1/4 dozen = 1/4 x 12 = 3
∵ Cost of 3 bananas = Rs. 2.35
⇒ Cost of 1 banana = Rs. 2.35/3

Correct Option: D

∵ 1 dozen = 12
⇒ 1/4 dozen = 1/4 x 12 = 3
∵ Cost of 3 bananas = Rs. 2.35
⇒ Cost of 1 banana = Rs. 2.35/3
∴ Cost of 42 x 12 bananas = (2.35 x 42 x 12 ) / 3
= Rs. 394.80
= Rs. 400 (Approximately)

∵ Total cost of 7000 bricks = 5740 + 805 = Rs. 6545
⇒ Total cost of 1 brick = Rs. 6545/7000

Correct Option: C

∵ Total cost of 7000 bricks = 5740 + 805 = Rs. 6545
⇒ Total cost of 1 brick = Rs. 6545/7000

∴ Total cost of 1000 bricks = (6545 / 7000) x 1000
= Rs. 935