Let number of toys be N.
More hours, More toys (Direct proportion)
2 : 80 : : 1 : N

Correct Option: A

Let number of toys be N.
More hours, More toys (Direct proportion)
2 : 80 : : 1 : N
⇒ N = 80/2 = 40 toys

Let the required number of bananas be N.
16 dozens bananas = 16 x 12 = 192 bananas
Less bananas, Less cost (Direct proportion)
360 : 60 : : 192 : N

Correct Option: C

Let the required number of bananas be N.
16 dozens bananas = 16 x 12 = 192 bananas
Less bananas, Less cost (Direct proportion)
360 : 60 : : 192 : N
∴ N = (60 x 192)/360 = 32 bananas

∵ Cost of 15 eggs = ₹ 75
∴ Cost of 1 egg = ₹ 75/15
∴ Cost of 4 dozens (4 x 12) = Cost of 48 eggs

Correct Option: A

∵ Cost of 15 eggs = ₹ 75
∴ Cost of 1 egg = ₹ 75/15
∴ Cost of 4 dozens (4 x 12) = Cost of 48 eggs
= (75/15) x 48 = ₹ 240

∵ Cost of 12 pens = ₹ 84
Cost of 1 pen = ₹ 84/12

Correct Option: D

∵ Cost of 12 pens = ₹ 84
Cost of 1 pen = ₹ 84/12
∴ Cost of 10 pens = (84/12) x 10
= 7 x 10 = ₹ 70

Let the required cost be ₹ N.
More orange, more cost (Direct proportion)
24 : 120 : : 72 : N

Correct Option: B

Let the required cost be ₹ N.
More orange, more cost (Direct proportion)
24 : 120 : : 72 : N
∴ N = (120 x 72)/24 = ₹ 360