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GrogVix [38]
3 years ago
9

if there are 300 calories in 100 g of a certain food, how many calories are there in a 30 g portion of food​

Mathematics
1 answer:
kap26 [50]3 years ago
6 0

Answer:

90 calories

Step-by-step explanation:

Calories : quantity of food

there are 300 calories in 100 g of a certain food

300 calories : 100 g food

how many calories are there in a 30 g portion of food​

Let x = number of calories

x calories : 30 g food

Equate both ratios

300 calories : 100 g food = x calories : 30 g food

300/100 = x/30

300 * 30 = 100 * x

9000 = 100x

x = 9000/100

x = 90

x = number of calories = 90 calories

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Let's say 1000 dollars was spent on all of these. That would mean 170 dollars and 240 were spent on food and entertainment respectivly. If we want to see how much of the total cost was spent on these things, we would have to add them and divide them by 1000, so:

\frac{170+240}{1000}=\frac{410}{1000}=frac{41}{100}

6 0
3 years ago
Write the following sentence as an equation.<br> The quotient of 120 and twice 20 is equal to 3.
pshichka [43]

Answer:

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Step-by-step explanation:

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3 years ago
2. At the mall, Leona bought a T-shirt and a book for a total of $23. The book cost $12. How much did the T-shirt cost?
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3 years ago
Read 2 more answers
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2 years ago
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Answer:

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Step-by-step explanation:

Jenny ran on Tuesday for = 2/5 hours or 0.4 hours.

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Here, the total hours can be calculated by just adding all the running hours. So the running hours of Tuesday, Thursday, and Saturday will be added to find the total hours.

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