A person bought some rice and wheat for ₹ 380. The ratio of weight of rice and wheat is 4 : 3 and the price of equal amount of rice and wheat is in the ratio 5 : 6. The rice was bought of worth 

The average of 20 numbers is 32. If two numbers are 29 and 31, then what is the average of the remaining numbers (correct up to two decimals)? 

Shankar took a loan of Rs. 25,000 for purchasing a machine. How much amount will he repay after 1 year 6 months at annual rate of 12%, when interest is accumulated annually? 

The sum of squares of three numbers is 532. And the ratio of first to the second as also of the second to the third is 3:2. What is the second number?

Directions : What will come in the place of the question mark (?) in the following number series?

5040, 840, 168, 42, 14, ? , 7

B borrows 5,000 from A at 6 % p.a. simple interest and lends it to C at compound interest of 10 % p.a. If B collects the money back from C after 2 years and repays A, the profit made by B in the transaction is 

A, B and C started a business with their investments in the ratio 1 : 2 : 4 . After 6-month A invested the half amount more as before and B invested same the amount as before while C withdrew $$1\over 4$$th of the his investments. Find the ratio of their profits at the end of the year.