[cos25°−sin65°]/ [cos25°+sin65°]. Use the identity sin 65° = cos (90° - 65°) Since sin 65°= cos 25°, the expression becomes- [cos 25° - cos 25°]/ [cos 25° + cos 25°] = 0/2cos25° =0 So, the value of the expression is 0.
Tina is 50% more efficient than Rina, and Mina is 30% more efficient than Tina. If Mina and Tina together can do a piece of work in 12 days, in how many...
A tradesman marks his goods 32% above the cost price and allows his customers 10% reduction on their bills. What percentage profit does he make?
The marked price of an article in two different shops P and Q is Rs 1200 and Rs X respectively. In shop P the article is available at two successive dis...
An item is sold at 70% of its marked price, resulting in a 40% profit. Determine the ratio of the marked price to the cost price for this item.
Atul buys an equal number of oranges at two rates: 3 for ₹13 and 5 for ₹20. He sells all the oranges at a rate of 4 for ₹15. Determine his overall...
A shopkeeper sold an article after giving a discount of 24% and made a profit of Rs.32. Find the difference between the marked price and selling price o...
After selling 20 pens, a Shopkeeper earn a profit of the selling price of 6 books. While selling 20 books, a shopkeeper losses a selling price of 8 pen...
The ratio of the cost price of an article to its selling price is 2:3. The marked price of the same item is Rs. 2,100 whereas the sum of the discount of...
A trader bought an article for Rs. 3000 and marked it 20% above of its cost price. If he sold it after giving a discount of Rs. 120 then find the profit...
By selling a Mobile for Rs. 3720 a shopkeeper gains 24%. If the profit reduced to 14%, then the selling price will be
