Loft insulation reduces annual heating costs by 20

Asked by maham237 @ in Mathematics viewed by 458 People

Loft insulation reduces annual heating costs by 20%. After he insulated his loft, curtleys annual heating cost was £520. Work out curtleys annual heating cost would have been, if he had not insulated his loft.

Answered by maham237 @


520 x 0.2 = 104
520 + 104 = 625
Curtley's annual heating cost before he got his loft insulated was $624.00

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