1

Question

It took 45 minutes to clean a portion of restaurant. However 'x' m2area of restaurant is still left. To make the process faster, it is decided to clean every

1 m2 of the remaining area in every 0.35 minutes.

If 't' is the total time taken to clean the entire restaurant, select the function that represents the total time taken.

1 m2 of the remaining area in every 0.35 minutes.

If 't' is the total time taken to clean the entire restaurant, select the function that represents the total time taken.

Open in App

Solution

The correct option is **D** t = 45 + 0.35x

Here, total time taken will be the output = t

Number of minutes took to clean a portion of restraurant = 45

To increase the process it is cleaned at a

rate of 1 m2 per 0.35 minutes

∴ Time taken to clean x m2 of remaining

area=0.35x

So, total time taken = Number of minutes

taken to clean a portion of restaurant

+ time taken to clean remaining x m2

⟹ t=45+0.35x

Here, total time taken will be the output = t

Number of minutes took to clean a portion of restraurant = 45

To increase the process it is cleaned at a

rate of 1 m2 per 0.35 minutes

∴ Time taken to clean x m2 of remaining

area=0.35x

So, total time taken = Number of minutes

taken to clean a portion of restaurant

+ time taken to clean remaining x m2

⟹ t=45+0.35x

0

View More

Join BYJU'S Learning Program

Join BYJU'S Learning Program