PLEASE HELP When Grayson does 8 push-ups and 9 sit-ups, it takes a total of 34 seconds. In comparison, he needs 56 seconds to do 8 push-ups and 20 sit-ups. How long does it take Grayson to do each kind of exercise?

2 seconds per push-up

2 seconds per sit-up

Step-by-step explanation:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

so, converting firstly the mixed fractions to improper fractions and then "adding".