Question

Q 13: max can mow a lawn in 45 minutes. Jan takes twice as long to mow the same lawn if they work together how long will it take them to mow the lawn.

Answer 1

30 minutes. 
Hope this helps you!

Answer 2

Answer:

Option C is correct

It will take them to mow the lawn is, 30 min

Step-by-step explanation:

Given the statement: max can mow a lawn in 45 minutes.

⇒max can mow a lawn = $\frac{1}{45}$

Also, it is given that: Jan takes twice as long to mow the same lawn

then;

Jan can mow a lawn =  $\frac{1}{90}$

If they work together:

Together they can mow a lawn = $\frac{1}{45} + \frac{1}{90} = \frac{2+1}{90} = \frac{3}{90} =\frac{1}{30}$

Therefore, 30 min it will take them to mow the lawn.