SRI bhd. Is an engineering workshop which makes machineries to customer's order. Job 171 is an progress. Cost incurred up to 31 march 2009 comprise of:
materials=$1020
wages=$290
factory overhead=$90

the following costs were charged to the following jobs in April 2009
job 010:
materials=$470
wages=$250
job X15:
materials=$650
wages=$320
job T2:
materials=$690
wages=$390

Actual overhead incurred for the month of April amounted to $5400. However the company charges overheads to job based on 90% of direct labour cost. The following two jobs were completed in april:

job quoted price
010 $5400
X15 $4500

required:
a. compute the cost of each job up to April 2009
b. determine profits made for April 2009


P/s: help me?