Q. Type the missing number to complete the proportion.9 push-ups in 1 day = _ push-ups in 2 days
Identify push-ups in 1 day: Identify the number of push-ups done in 1 day. 9 push-ups in 1 day.
Set up proportion for 2 days: Set up the proportion to find the number of push-ups in 2 days.If 9 push-ups are done in 1 day, then x push-ups in 2 days.19=2x.
Solve proportion for x: Solve the proportion for x. Cross-multiply to get: 9×2=1×x, 18=x.