An industrial machine can make four hundred seventy nine crayons a day if each box has 2 crayons how many full packs does it mak
2 answers:
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Make a proportion using the ratio (A:B) given and number of As and Bs really gotten in the class ()
Cross multiply
2 * 40 = 5 * A
80 = 5A
Isolate A by dividing 5 to both sides
80/5 = 5A/5
16 = A
If 40 people in the class got B's then 16 people got A's
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