What is the cost of running five 50W lamps and four 100W lamps for 10 hours if electrical energy costs 2 Kobo per KWh?

Bougie

4 years ago

Five 50w lamps= 5×50= 250w
Four 100w lamps= 4×100= 400w
Power= 250+400= 650w
Energy consumed= electric power× time= 650×10= 6500whr
1000whr----1kwhr
6500/1000= 6.5kwhr
1kwhr-----2kobo
6.5kwhr---- x
Cross multiply =6.5×2= 13.00kobo
100kobo----1 naira
13.00 kobo----x
= 13/100= 0.13naira
So D is correct 😊

Jamesnwoba

3 years ago

650/1000×10×2=13kobo
But 100kobo=#1
13kobo=13×1/100
=#0.13

chikaodiri06

4 years ago

There is no solution to
this question

Brovic02

2 years ago

No explanation

Finesse11

3 months ago

😂😂all will be well

123david

2 years ago

how i wish i know it is..250
but i dont know it 400
so i wish to know it is 650
sha everthing everthing i will know it so far am reading and belive in God is now 0.13

Brovic02

2 years ago

Wrong explanation