During a recent month, cali company planned to provide cleaning services to 30 customers for $ 31 per hour. each job was expected to take 4 hours. the company actually served 10 more customers than expected, but the average time spent on each job was only 3.5 hours each. cali's revenues for the month were a. $ 620 less than expected. b. $ 1 comma 240 more than expected. c. cannot be determined from data given d. $ 620 more than expected.

Option (D) is correct.

Explanation:

Expected Revenue = 30 Customers × 4 hours each × $31 per hour.

                                 = $3,720

Actual Revenue = 40 Customers × 3.5 hours each × $31 per hour.

                            = $4,340

Increased Revenue = $4,340 - $3,720

                                 = $620

Therefore, Cali's revenues for the month were 620 more than expected.

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