Technical improvement of a factory enabled it to produce 165 parts more in February than in January. In the two-month period, the factory produced 1315 parts altogether. How many parts were produced in January and how many parts were produced in February?
1315=2x+165 x=parts produced per month
1315-165=2x getting x alone
1150=2x simplifing
1150/2=x getting x by itself
575=x parts produced per month
x+165=parts in February
x=parts in January
740 parts in February
575 parts in January
Hope this helps