Dana loves rocks! She has 6 pieces of granite, 3 pieces of marble, 14 pieces of sandstone, and 1 piece of slate.

Okay, I'm not sure what you're asking

So she has 6 granite, 3 marble, 14 sandstone, 1 slate.

6+3+14+1 is 24.

She has 24 rocks.

what's that

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