Question

A CFL ( Compact Fluorescent Lamp ) uses 80℅ less electricity than a filament bulb to give the same amount of light . Three filament bulbs of house, one each of 100 W, 60 W and 40 W used for equal duration every day, are replaced with CFL bulbs. Calculate the percentage saving in the total electricity consumption by replacing (i) 100 W bulb only (ii) 60 W bulb only (iii) 40 W bulb only (IV) all 3 bulbs

Answer 1

Answer:

in this question 3 answer is correct

Answer 2

Answer:

(IV) All 3 bulbs

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