Originally Posted by
danielwu hi there i have problem with this word problems
Set up appropriate systems of two linear equations in two unknowns and then solve the systems by determinants. all numbers are accurate to at least two significant digits.
(A) A shipment of 320 cell phones and radar detectors was destroyed due to a truck accident. on the insurance claim, the shipper stated that each phone was worth $110, each detector was worth $160, and their total value was $40700. how many of each were in the shipment?
(1) $110 + $160 = $40700<--------is the first equation right??
(2) ??????????????????????
was wondering is there a way to master these word problem?