indian electicity prices has risen from Rs 6.4 to Rs 6.5.A factory expected to use 600 units in the next billing.He has installed solar panels.this reduced his electricity usage by 90%.
How much did the factory bill increase?

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Solution

Total usage after solar power installation = (100 - 90) % = 10 %
10 % of 600 units = 60 units.
Cost of 60 units before price hike = 60 x 6.4 = Rs 384
Cost of 60 units after price hike = 60 x 6.5 = Rs 390
Therefore, Price difference = Rs 390 - 384 = Rs 6

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indian electicity prices has risen from Rs 6.4 to Rs 6.5.A factory expected to use 600 units in the next billing.He has installed solar panels.this reduced his electricity usage by 90%.How much did the factory bill increase?

Total usage after solar power installation = (100 - 90) % = 10 % 10 % of 600 units = 60 units. Cost of 60 units before price hike = 60 x 6.4 = Rs 384 Cost of 60 units after price hike = 60 x 6.5 = Rs 390 Therefore, Price difference = Rs 390 - 384 = Rs 6

indian electicity prices has risen from Rs 6.4 to Rs 6.5.A factory expected to use 600 units in the next billing.He has installed solar panels.this reduced his electricity usage by 90%.
How much did the factory bill increase?

Total usage after solar power installation = (100 - 90) % = 10 %
10 % of 600 units = 60 units.
Cost of 60 units before price hike = 60 x 6.4 = Rs 384
Cost of 60 units after price hike = 60 x 6.5 = Rs 390
Therefore, Price difference = Rs 390 - 384 = Rs 6