A dishonest dealer professes to sell his goods at the cost price but uses a false weight of 900 g instead of 1 kg. His gain percent is:
Find the quarterly instalment that will discharge a debt of Rs 2120 due in 1 years at 16% per annum simple interest.
18 men can complete a certain work in 15 days working 8 hours a day. How many men can complete the same work in 12 days working 9 hours a day?
Which of the following is true for 0° < θ < 90° ?
The value of (1 + sec20° + cot70°)(1 - cosec20° + tan70°) is: