A rickshaw dealer buys 30 rickshaws for Rs. 4725. Of these, 8 are four-seaters and the rest are two seaters. At what price must he sell the four-seaters so that if he sells the two-two seaters at $$\frac{3}{4}$$th of this price, he makes a profit 40% on his outlay?
A. Rs. 180
B. Rs. 279
C. Rs. 360
D. Rs. 450
E. None of these
Answer: Option B

1) Total cost price
He bought 30 rickshaws for Rs 4725.
So this is his total spending.
2) He wants 40% profit
40% profit on Rs 4725 means he wants total selling money to be:
So all 30 rickshaws together must sell for Rs 6615.
3) Let price of one four-seater = Rs x
Then price of one two-seater = 3/4 of x
So:
8 four-seaters sell for 8x
22 two-seaters sell for:
Total selling price:
This must equal 6615.
Final answer
Price of one four-seater rickshaw = Rs 270
Then one two-seater will be:
So:
Four-seater = Rs 270
Two-seater = Rs 202.50
Answer should be 270 not 279 option be wrong
8p+33p/2=6615=270rs
two-two seater is 3/4 of this price..
22-two seater price=22/2 * 3/4 p
so original eq 8p+(33/4)p=6615