if it takes 42 strokes to fill up 3/5 of line of typing , how many more strokes will it take to complete the line?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate

If the scale factor between two circles is 2x/5y what is the ratio of their areas?