The cost of 6 dozen apples and 8 dozen bananas is ₹ 1400. what will be the cost of 15 dozen apples and 20 dozen bananas?

The HCF of two numbers, each having three digits, is 17 and their LCM is 714. The sum of the numbers will be: 

The sum of three consecutive odd natural numbers each divisible by 3 is 63. What is the largest among them? 

Nitin borrowed some money at the rate of 6% p.a. for the first three years, 9 % p. a. for the next five years and 13 % p.a. for the period beyond eight years. If the total interest paid by him at the end of eleven years is ₹8,160, the money borrowed by him ( in ₹ ) was -  

If Sonu is driving a car at a speed of 20m/s, then in how much time Sonu will cover a distance of 936 km?

Population of a town increases by 12% every year. If the population of town will be 188160 after 2 years, then what is its present population?

What is the simple interest when Rs. 13000 get the interest Rs. 6,370 in the $$ {3{1\over 2}}$$ year?

180 m long Train A crosses Train B of 120 m in length which is running in opposite direction in $$ {60\over 11}$$ sec. If speed of train B is 20% more than that of train A, then find the time taken by both trains to cross each other, when they running in same direction?