A scientist removed a sample of 39.1 grams of a chemical from a container. The sample was 5 3/4 grams less than 3/10 of the tota l mass of the chemical in the container. What was the total mass, in grams, of the chemical in the container before the scientist removed the sample of 39.1 grams?
1 answer:
The total mass was 149.5 grams. Setting up an equation, we have that the sample size, 39.1, is 5 3/4 (5.75) grams less than 3/10 of the total mass; this gives us 39.1 = 3/10x - 5.75 Adding 5.75 to both sides, we have 44.85 = 3/10x Multiplying both sides by 10, 448.5 = 3x Dividing both sides by 3, 149.5 = x
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Mean can be described as the sum of terms divided by the number of terms
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Step-by-step explanation:
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