Quantitative Aptitude - Arithmetic Ability Questions

Find the third proportional to 6 and 12.

The average marks of 18 students in an examination was 60. It was later found that the marks of one student had been wrongly entered as 63 instead of 36. The correct average is:

On a machine there is 10% trade discount on the marked price of Rs 2,50,000. But the machine is sold at Rs 2,16,000 after giving a cash discount. How much is this cash discount (in %)?

After deducting 60% from a certain number and then deducting 15% from the remainder, 1428 is left. What was the initial number?

If A, B and C together do a job in 4 days, A and C together do the job in 4.5 days and B and C together do the job in 12 days then in how many days can C alone do the job?

A's income is Rs 140 more than B's income and C's income is Rs 80 more than D's. If the ratio of A's and C's income is 2:3 and the ratio of B's and D's income is 1:2, then the incomes of A, B, C and D are respectively

A profit of Rs. 960 is divided between A and B in the ratio 1/3:1/2. The difference of their profit is :

In the following question, select the odd word from the given alternatives.