Question

The data of the sales of two products is given below.

If sales of both products form a straight line, then find the day on which sales of both products will be equal , where 't' represents number of days.

• A. 40th day
• B. 50th day
• C. 52th day
• D. 44th day

Answer 1

The correct option is D 44th day

The sale at t = 0 days is $\$$20.

The sale at t = 65 is $\$$200.

So, the coordinates of the line are (0,20) and (65,200).

Plotting the graph by using the two coordinates:


For another product,

The sale at t = 0 days is $\$$70.

The sale at t = 80 is $\$$200.

So, the coordinates of the line are (0,70) and (80,200).

Plotting the graph by using the two coordinates:
Therefore, on 44th day, both have same sales.