For the following questions answer them individually
A man rows to a place situated 100 km away and comes back in 10 hours. He can row 12 km downstream or 8 km upstream in same time. What is the speed of the stream?
An article is sold at 5 percent loss. If its cost price is decreased by Rs. 20 and selling price is increased by Rs. 13, then profit of 10 percent is earned on it. What is we original selling price of the article?
What is the value of $$\left(\frac{21}{46} \div \frac{1}{6}\right) of \frac{23}{42} + \frac{96}{576} \times \frac{24}{3} - \left(\frac{88}{56} \times \frac{7}{9} \div \frac{5}{36}\right)$$?
The ratio of the volume of two cylinders is 27 : 25 and the ratio of their heights is 3 : 4. If the area of the base of the second cylinder is 3850 cm$$^2$$, then what will be the radius of the first cylinder?
The average of 7 consecutive odd numbers is A. If next 3 and previous 2 odd numbers to these 7 odd numbers are also included, then what is the new average of these 12 consecutive odd numbers?
What is the value of $$\frac{11 \times 11 - 24 \times 6 \ of\ 2 + 12 \times 12}{4 \times 5 + 6 \times 2 \div 4}$$?
Find the compound interest on Rs. 8000 at 15% per annum for 2 years (compounded annually.)
In what ratio must a grocer mix two varieties of sweets costing Rs. 30 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 25 per kg?
