Algebra Help Systems Of Equations
System of linear equations Algebra Help word problem?
peter posted a total of 150 enevelopes. some weighed 1 ounce and require a seal 39 cents. the other weighed 1 oz or more but less than 2 oz and 63-cent postage required. if your total shipping was 70.50 to determine how many envelopes were sent to each publication fee.
Let O be a T oz and one ounce more stamps. O + T = 150 (total 150 envelopes) 39 O + T = 0.63 70.50 (cost of 0.39 and 0.63 per ounce for more than an ounce) Establish the equation just substitute a O, O-T = 150 0.39 (150-T) + 0.63 = 70.50 58.50 0.63 T-.39T + 58.50 = 70.50 T + T = 0.24 70.50 0.24 T = 12 T = 50 O = 100-50, O = 100
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