In a computer lab, there are 3 computers for every 6 students. How many computers will be needed for 24 students?

In each of the following problems, clearly state what the relevant and irrelevant factors are while going through Steps 1, 2 and 3 given in this chapter :- Suppose a company needs a computer for some period of time. The company can either hire a computer for Rs 2,000 per month or buy one for Rs 25,000. If the company has to use the computer for a long period, the company will pay such a high rent, that buying a computer will be cheaper. On the other hand, if the company has to use the computer for say, just one month, then hiring a computer will be cheaper. Find the number of months beyond which it will be cheaper to buy a computer.

the teacher distributes 5 pencils per student.Can you tell how many pencils are neede,given the number of students?(Uses for the number of students.)

How do we compute the age of a rock?

Compute the area shown shaded in the figure.

Compute the area shown shaded in the figure.

In a college of 300 students every student reads of 5 newspaper and every newspaper is read by 60 students. The number of newspapers is:

How do we compute the age of fossils?

How do we compute the age of a fossil?