Um pedaço de fio tem 1,64 metros de comprimento. um segundo pedaço tem 2,5 metros qual a soma e qual diferença entre seus comprimentos?

How do i do this activity, is appreciated

Solve for x and y a x= 13.3 y= 16.7 b x= 23.3 y= 12.5 c x= 7.5 y= 16.7 d x=7.5 y= 12.5

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?