Question
If rxy = 0.75, then correlation coefficient between u =
1.5X and v = 2Y is:Solution
r is not affected by change of scale.
A vendor sets the price of an item 60% more than its cost and sells it after giving a 35% discount. What is the profit or loss percentage?
A man purchased two items together for a total of Rs. 480. He sold one item at a profit of 30% and the other at a loss of 20%. In the end, he achieved a...
A dishonest dealer professes to sell his goods at cost price, but he uses a weight of 600 gm for the kg weight. Find his gain per cent.
The selling price of an article by two different vendors is Rs.860 and profit earned is 25%. One vendor counts his profit on cost price while other one ...
If the selling price of 26 items is equal to the cost price of 32 items, determine the percentage of profit or loss. (Answer should be round off up to n...
- Cost price of article ‘B’ is (250/7)% of selling price of article ‘A’. Article ‘A’ is sold at 40% profit and cost price of article ‘A’ is R...
A reduction of 10% in the price of sugar enables a man to buy 5 kg more for RS 300. Find the reduced price per kg of sugar.
A fruit seller sells mangoes at a profit of 20%. If he had bought them at 10% less and sold them for ₹3 less per mango, he would have gained 25%. Find...
- In triangle PQR, a point S is on QR such that ∠PSQ = ∠SPR. If PQ = 60 cm, PR = 45 cm, and QR = 35 cm, find the length of QS.
An article is sold for a Rs 657.90 after successive discounts of 15% and 10%. Find the marked price of the article?
