Question : X is 30% more than Y and 25% less than Z. If the value of Y is Rs. 300, then what is the value (in Rs.) of Z?

Option 1: 390

Option 2: 400

Option 3: 470

Option 4: 520

Question : A trader sold an article at a gain of 20%. Had he purchased it for 40% more and sold it for Rs. 24 less, he would have incurred a loss of 20%. What is the cost price (in Rs.) of the article?

Option 1: Rs. 150

Option 2: Rs. 300

Option 3: Rs. 450

Option 4: Rs. 600

Question : An item is offered for sale at Rs. 250, less by successive discounts of 20% and 15%. The sale price of the item is:

Option 1: 82% of Rs. 250

Option 2: 77% of Rs. 250

Option 3: 68% of Rs. 250

Option 4: 65% of Rs. 250

Question : If 50% of (P –  Q) = 30% of (P + Q) and Q = $x$% of P, then the value of $x$ is:

Option 1: 30

Option 2: 25

Option 3: 20

Option 4: 50

Question : If $r$ = 55, then the value of $r(r^2+3 r+3)$ is:

Option 1: 105000

Option 2: 176615

Option 3: 175616

Option 4: 175615