Quantitative Aptitude - Arithmetic Ability Questions

An alloy is made by mixing metal A costing Rs 2000/kg and metal B costing Rs 400/kg in the ratio A:B = 3:1. What is the cost (in Rs) of 8 kilograms of this alloy?

The average of four consecutive odd numbers is 64. What is the value of largest number?

The average cost of 4 items in a shopping list is Rs 1,250. If one more item whose cost is Rs 2,000 is added to the list what will be the new average (in
Rs)?

A group of boys has an average weight of 36 kg. One boy weighing 42 kg leaves the group and another boy weighing 30 kg joins the group. If the average now becomes 35.7 kg, then how many boys are there in the group?

A shopkeeper by selling 22 Skechers shoes, earns a profit equal to the selling price of 6 Skechers shoes. His profit percentage is:

Find the odd word/letters/number pair from the given alternatives.

If 35% of A is equal to 60% of B, then what is the ratio of A and B?

If 170% of a number added to 66, then the result becomes equal to twice of the number. What is the number?