if the ratio of this series is r which of the following represents the sum of the series pi sigma l=1 a^l

the answer is b

is means division by fractions

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