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3 years ago

Joey fills 1/5 of a toffee box in 1/25 of a

Mathematics

2 answers:

sweet [91]3 years ago

7 0

Answer:

12 seconds will be needed to fill the toffee box.

Step-by-step explanation:

Joey takes the time to fill $\frac{1}{5}$ of a box = $\frac{1}{25}$ of a minute.

$\frac{1}{25}$ of a minute = $\frac{1}{25}\times 60$ seconds

= 2.4 seconds

Now we will use unitary method to get the time to fill a toffee box.

∵ $\frac{1}{5}$ box is filled in the duration = 2.4 seconds

∴ A box can be filled in the time = $\frac{2.4}{\frac{1}{5} }$

= 2.4×5

= 12 seconds

Therefore, 12 seconds will be needed to fill the toffee box.

butalik [34]3 years ago

5 0

1/25 of a minute is 2,4 secs.

1/5 = 2,4s
5/5 = 12 secs

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3 years ago

For f(x) = 3x +1 and g(x) = x2 – 6, find (f- g)(x).

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$\boxed{\sf (f-g)(x) = -{x}^{2} + 3x + 7}$

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$\sf (f - g)(x) = f(x) - g(x)$

Step-by-step explanation:

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3 years ago

asmine wants to use her savings of $1128 to buy video games and music CDs. The total price of the music CDs she bought was $72.

Inga [223]

Let g represent video games. The equation you can use to solve for the amount of video games and CDs Jasmine can buy with her savings is:
43g+72=1128

The 43g part is because it costs 43 dollars for every video game, so you need to multiply 43 by the amount of games she buys to get the total for g games.
The +72 part is because you already have the amount spent on CDs, and needs to be added to the cost of video games, so that the sum would be equal to 1128.

Now, solving:
43g+72=1128 ...subtract 72 from both sides
43g=1056 ...divide both sides by 43 to isolate g
g=24.5581395349
Rounded up, that would be 25 games, but Jasmine's savings isn't enough to buy 25 games that cost $43 each, so you would go down to 24 games.

The answer: Jasmine can buy 24 games with her savings after spending $72 on CDs.

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3 years ago