Suppose he sells x oranges
Then, C.P.of x oranges = Rs. 2x/3
S.P. of x oranges = Rs. x

Correct Option: C

Suppose he sells x oranges
Then, C.P.of x oranges = Rs. 2x/3
S.P. of x oranges = Rs. x
Profit on x oranges = Rs. (x - 2x/3) = Rs. x/3
∵ x/3 = 10 ⇒ x = 30

2 x + y = 7000 ....(i)
x + 2y = 4250 .....(ii)

Correct Option: D

2 x + y = 7000 ....(i)
x + 2y = 4250 .....(ii)
Solving (i) and (ii) we get,
x = 3250
∴ Cost of T.V. set is Rs. 3250.

Let C.P.be Rs. x then, x - 270 = 10% of x = x / 10
∴ x = 300

Correct Option: D

Let C.P.be Rs. x then, x - 270 = 10% of x = x / 10
∴ x = 300

Let original price = Rs. 100
Price after 1 st discount = Rs. 90
Price after 2 nd discount = Rs. (80/100) x 90 = Rs. 72
Price after 3 rd discount = Rs. (60/100) x 72 = Rs. 43.20

∴ Single equivalent discount = (100 - 43.20) = 56.8%

Correct Option: B

Let original price = Rs. 100
Price after 1 st discount = Rs. 90
Price after 2 nd discount = Rs. (80/100) x 90 = Rs. 72
Price after 3 rd discount = Rs. (60/100) x 72 = Rs. 43.20

∴ Single equivalent discount = (100 - 43.20) = 56.8%

Let S.P. = Rs. 100
Then C.P. = Rs. 40
∴ Required percent = (100/40) x 100% = 250%

Correct Option: D

Let S.P. = Rs. 100
Then C.P. = Rs. 40
∴ Required percent = (100/40) x 100% = 250%