Question

The given table shows the total yield produced in certain days as:

Total yield (in lb per sq ft)	3.2	7.2
Time (in days)	4	?

Find the number of days taken to make a yield of 7.2 lb/sq ft if the yield is directly proportional to time.

• A. 7 days
• B. 8 days
• C. 9 days
• D. 10 days

Answer 1

The correct option is C 9 days

We know, yield produced is directly poroportional to the time taken in days.

The table is given as:

Total yield (in lb per sq ft)	3.2	7.2
Time (in days)	4	?

Yield per day $=\frac{\text{y}}{\text{x}}$
$=\frac{3.2}{4}$
$=0.8$

Now, yield per day = 7.2 lb/sq ft

Putting value, we get,
Yield per day = $\frac{7.2}{x}$
$\Rightarrow 0.8=\frac{7.2}{x}$
$\Rightarrow \text{x}=\frac{7.2}{0.8}$
$\Rightarrow \text{x}=9$

So, to produce a yield of 7.2 lb per sq ft, 9 days are required.