Respuesta :
This is a power problem which requires the rearranging of a formula. The lamps energy used is 5 N, and the TV’s usage is 116.7 N (rounded from 116.6666repeating). Here my work:
Answer:
2.74
Explanation:
Power of lamp, PL = 120 W, t = 24 hours
Power of TV, PT = 350 W, t = 3 hours
Energy consumed by a lamp, EL = Power x time = 120 x 24 = 2880 W h
Energy consumed by a TV, ET = power x time = 350 x 3 = 1050 W h
EL / ET = 2880 / 1050 = 2.74
