Quantitative Aptitude - Arithmetic Ability Questions

Find the value of x if 0.08x + 0.04y = 10 and 0.2(x-1) + 0.4y = 24.8

Select the odd letters from the given alternatives.

Select the odd number from the given alternatives.

Rearrange the jumbled up letters to form a meaningful word and find the odd one out.

A man buys 10 oranges for Rs. 3 and sells 8 for Rs. 3. Calculate his gain percent.

The smallest number that must be subtracted from 2800 so that the obtained number is a perfect square is

If the time increases by 5 years, then simple interest increases by Rs 3000 on a sum of Rs 5000. What is the rate (in percentage) of interest per annum?

The difference between Peter and Preeti's ages is 5 years. When they married each other 35 years ago, 4 times Peter's age was the same as 5 times the age of Preeti. What is the current sum of their ages?