[ilovemath]

Please can someone look at the attached quesiton (I have extracted MS and relevant previous pieces of information)

Where do they get the idea that 100 W is produced over 24 hours ??


I know power = work done / time
but if power is in Watts, time is in seconds

also if each low energy bulb is 11W (11*4 = 44W). so surely no energy is needed from national grid but they suggest it does (44W << 100W)

please can someone explain the MS (or Q or both) to me

thanks

[ilovemath]

you know what...it was a specimen paper and was a silly Q with silly A

never mind everyone