Question

In a house everyday they are using six,
100W bulbs for 3 hours, five 60W bulbs for
6 hours, five 40W bulbs for 2 hours. In the
month of August and September let they
used in the same way. What is the
difference in units consumed by them in
these two months ?
1) 120
2) 4000
3) 124
4) 4​

Answer 1

Explanation:

120w difference between these bulbs