Ajay and Vijay have some marbles. If Ajay gives 5 marbles to Vijay, he would have twice the number of marbles Vijay would have. If Vijay Gives 15 marbles to Ajay, Ajay would have 8 times the number of marbles Vijay would have. Find the number of marbles with Vijay.
A person mixes three varieties of wheat costing rs 20/kg, rs 24/kg, rs 30/kg in the ratio of 1:5:2 and sells the mixture at a profit of 20%. Find the selling price of the mixture when it is sold at 33% profit.
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?