3 years ago

A recipe calls for 30 grams of sugar. Ramesh decides to decrease the sugar by 20%. How much sugar will Ramesh use?

Mathematics

1 answer:

stiv31 [10]3 years ago

6 0

Answer:

24 grams

Step-by-step explanation:

80% (100%-20%) of 30 is 24

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Hello There!

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Question is shown below.

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ANSWER

D. 4 minutes 40 seconds

EXPLANATION

The given data set showing the number of seconds of each song the playlist is:

283,204,198,229,173,230,168,236,215,204

Let the length of the 11th song be x.

Because he wants the mean to be 3 minutes 40 seconds, which is equal to 220 seconds, we write and solve the following equation for x.

$\frac{283 + 204 + 198 + 229 + 173 + 230 + 168 + 236 + 215 + 204 + x}{11} = 220$

$\frac{2140 + x}{11} = 220$

$2140 + x = 2420$

$x = 2420 - 2140$

$x = 280$

We convert 280 seconds to minutes.

$\frac{280}{60} = 4 \frac{2}{3} = 4mins : 40 sec$

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