Final answer:
To find the average monthly consumption for electricity and gas for Nicola's business after the increase in prices, add the new prices to the previous average consumption. The new average monthly consumption is approximately 4903.9 kWh.
Step-by-step explanation:
To find the average monthly consumption for electricity and gas for Nicola's business after the increase in prices, we need to add the new prices to the previous average consumption. Let's assume the price increase for electricity is $0.05 per kWh and for gas is $0.10 per kWh.
For electricity: 1120 kWh * $0.05 = $56 increase
For gas: 3389 kWh * $0.10 = $338.90 increase
Adding these increases to the previous average consumption, we get:
New average monthly consumption for electricity and gas = (1120 kWh + 56 kWh) + (3389 kWh + 338.90 kWh)
= 1176 kWh + 3727.9 kWh
= 4903.9 kWh
Therefore, the average monthly consumption for electricity and gas for Nicola's business after the increase in prices is approximately 4903.9 kWh.