Quantitative Sk...

2M + 5W + 6C does a work in 72 hours while 4M + 10C can complete the same work in 90 hours and 3M + 5W can complete the same work in 120 hours, then find in how much time will 5M + 4C complete the work.

What is the average annual growth rate of power has increased from 2005 to 2009?

Which sector has recorded maximum growth in CO₂ emissions from 2005 to 2009?

By what percentage (%), the total emissions of CO₂ have increased from 2005 to 2009?

What is the percentage (%) growth of CO₂ emissions from the power sector from 2005 to 2009?

A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective is:

The first term of an Arithmetic Progression is 22 and the last term is −11. If the sum is 66 , the number of terms in the sequence are:

10 persons begin to work together on a job, but after some days, 4 persons leave. As a result, the job, which could have been completed in 40 days, was completed in 50 days. How many days after commencement of the work did the four persons leave?

The following question is accompanied by two statements (I) and (II). You have to determine which statements(s) is/are sufficient/necessary to answer the questions.

What is the rate of simple interest?

I. The amount was invested for 8 years.

II. The simple interest is half the investment.

The marked price of an article is Rs. 400. After allowing a discount of 20% on the marked price, a shopkeeper makes a loss of Rs. 48. His loss percentage is: