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11111nata11111 [884]

3 years ago

13

A bookstore had 90 copies of a magazine. Yesterday, it sold 1/6 of them. Today, it sold 1/5 of what remained. How many copies do

es the bookstore have left

1 answer:

MA_775_DIABLO [31]3 years ago

6 0

Answer:

60 copies

Step-by-step explanation:

first you take 1/6th of the original 90 copies which is 15 and subtract that from the 90, you are left with 75 copies which is how many they had left at the end of yesterday. then you take 1/5th of the 75 copies that are left which is also 15 and you subtract that from 75 and you get 60. that's why at the end of today there are 60 copies left.

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Answer:

$Highway = 155\ miles$

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Step-by-step explanation:

Given

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$City = 26mi/gallon$

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Required

Determine the number of miles driven on the highway and on the city

Represent the gallons used on highway with h and on city with c.

So, we have:

$c + h = 10$ ---- gallons used

and

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In the first equation, make c the subject

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Substitute 10 - h for c in the second equation

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Open bracket

$31h + 260 - 26h = 285$

Collect like terms

$31h - 26h = 285 - 260$

$5h = 25$

Make h the subject

$h = \frac{25}{5}$

$h = 5$

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$c = 5$

If on the highway, he travels 31 miles per gallon, then his distance on the highway is:

$Highway = 31 * 5$

$Highway = 155\ miles$

If in the highway, he travels 26 miles per gallon, then his distance on the highway is:

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$City = 130\ miles$

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Answer:

Hello,

Step-by-step explanation:

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Step-by-step explanation:

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