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function area(room) {
return room.length * room.width;
function priceForRoom(roomArea, carpet) {
let sqrMetres = roomArea;
sqrMetres = Math.ceil(sqrMetres);
return sqrMetres * carpet.pricePerSqrMetre;
function quote(room, carpet) {
return priceForRoom(area(room), carpet);
module.exports = quote;
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