A manager bought lunch for his coworkers. Each person picked either a salad or a burger. The salads cost $5 each and the burgers
cost $8 each. If the manager spent $102 and bought lunch for 18 people, how many of each item did he buy?
1 answer:
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For this case we have to define the order of algebraic operations, that the division and multiplication must be done before (from left to right) that the addition and subtraction.
Then, given the following expression:
m = 10-6÷7-8.5
We have to:
So, we have:
We must bear in mind that equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed.
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