Grayson can text 70 words in 4 minutes. At this rate, how many minutes would it take

Mathematics

1 answer:

yuradex [85]7 months ago

5 0

The minutes taken by Grayson to text 140 words if Grayson can text 70 words in 4 minutes is 8 min.

<h3>What is division?</h3>

It is the basic arithmetic operation, in which you are separating the number into some parts.

Given:

Grayson can text 70 words in 4 minutes,

The time is taken to type one word = 4 / 70 = 0.057 min

Thus, typing 140 words Grayson would take = 0.057 × 140 = 8 min

Therefore, the minutes taken Grayson to text 140 words if Grayson can text 70 words in 4 minutes is 8 min.

To know more about division:

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Alex is making puppets for a show. He bought all the string needed for $125. It costs $18 for the remaining materials to make ea

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Alex bought all the string needed for $125.

It costs $18 for the remaining materials to make each puppet.

So if we closely observe then we see that here $125 is the fixed cost because its not going to change with number of puppets.

And the variable cost is $18.

In this case we can model a Total cost function C(x) for for x number of puppets as below

$C(x)=125+18x\\ \\ \text{Here x is the number of puppets}\\ \\ \text{Since in our case the number of puppets is 50 so replace x by 50 we get }\\ \\ C(50)=125+18*50\\ \\ C(50)=125+900\\ \\ C(50)=1025 \ dollar.$