5) A total of 35,000 units were sold last year. The contribution margin per unit was $2, and total fixed expenses were $20,000 for the year. This year, fixed expenses are expected to increase to $24,000, but the contribution margin per unit will remain unchanged at $2. How many units must be sold this year to earn the same operating income as was earned last year?

7)Carlo Company uses a predetermined overhead rate based on direct labour hours to apply manufacturing overhead to jobs. The company estimated manufacturing overhead at $250,000 for the year and direct labour hours at 100,000 hours. Actual manufacturing overhead costs incurred during the year totalled $270,000; actual direct labour hours were 114,000. What was the overapplied or underapplied overhead for the year?

10)Yola Company manufactures a product with standards for direct labour of 4 direct labour-hours per unit at a cost of $12.00 per direct labour-hour. During June, 1,000 units were produced using 3,850 hours at a total cost of $51,000. What was the direct labour efficiency variance?

Can i get help with these questions thank you.