Wallace Motors buys and sells used cars. Wallace made the following sales during January and February:
a. Three cars were sold to Russell Tax if or a total of $75,000; the cars were delivered to Russell on January 18. Russell paid Wallace $20,000 on January 18 and the remaining $55,000 on February 12.
b. One car was sold to Hastings Classics for $28,000. The car was delivered to Hastings on January 25. Hastings paid Wallace on February 1.
Calculate the monthly revenue for Wallace for January and February.