For the following questions answer them individually
The bar graph shows the production of tablets and mobiles in four consecutive years. Calculate the ratio of mobiles in 2015 to tablets in 2018.
One third part of a certain journey is covered at the speed of 10 km/hr, one fourth part at the speed of 15 km/hr and the rest part at the speed of 20 km/hr. What will be the average speed for the whole journey?
Price of 15 chairs is 20 percent more than the price of 8 tables. If price of 2 tables is Rs.2400, then what is the price of 15 chairs?
Among the following, in which material the speed of sound is highest? (at $$25^{\circ}$$C)
______ came into existence on 12 July 1982 by transferring the agricultural credit functions of RBI and refinance functions of the then Agricultural Refinance and Development Corporation.