Asked by Yusuf
The charge for electricity consumption,E is partly constant and partly varies as the number N of unit used.the charge for 42 unit it's is 139.20.calculate the charge per unit of electricity.
Answers
Answered by
oobleck
E = a + bN
so, you know that
a + 32b = 139.20
that is not enough to determine b, the rate per unit.
so, you know that
a + 32b = 139.20
that is not enough to determine b, the rate per unit.
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