Explanation

Choice $\mathrm{C}$ is correct. This is a proportion problem. If $x$ is the number of loggers needed to chop down 20 trees,

then we form the proportion 8 loggers : 28 trees $=20$ loggers : $x$ trees, or $\frac{8}{28}=\frac{20}{x}$. Solving for $x$, we get $x=\frac{(28)(20)}{8}$, or $x=70$

Explanation

Steps to solve "what percent is 49 of 70?"

1. 49 of 70 can be written as:
   4970
2. To find percentage, we need to find an equivalent fraction with denominator 100. Multiply both numerator & denominator by 100
   
   4970 × 100100
3. = (49 × 10070) × 1100 = 70100
4. Therefore, the answer is 70%

   If you are using a calculator, simply enter 49÷70×100 which will give you 70 as the answer.

Explanation

We are given a series as 3,3,6,18,72,360,?

Now our duty is to find the pattern in the series.

Let’s take the first two terms 3 and 3.

The only clue we get is that the second term is ×1

 of the first term.

And also if we add 0 to 3 we get the answer as 3.

Now for the next two terms 3 and 6.

Now 3×2=6

. So the pattern of the product is fit.

 Let’s check for the addition. Its 3+3=6

Next are 6 and 18.

So 6×3=18

. So the product works.

For addition, 6+12=18

But we are not getting any chain or relation between the term for addition so we will drop it here only and will go with the product.

Thus,

3×1=3

3×2=6

6×3=18

18×4=72

72×5=360

Now the term that will replace the question mark will be 6 times 360.

360×6=2160

Thus the missing number is 2160.

Thus the series is 3,3,6,18, 72,360,2160.

So, the correct answer is “2160”.

Explanation

I am not sure whom to ask