Question

A man has 350 watches.He sells w watches every day.write an algebraic expression to show the number of watches he would be left with after t weeks

Answer 1

Total no of watches is 350

let the no of watches be x

If he sells w watches everyday, then he sell 7w watches in a week

The no of weeks is t

Then he sells 7w*t watches in t weeks

Now the no of watches he is left are:

350-7w*t=x