Write a word problem using 3/4•4/5

Think about it this way:

By saying 3/4 x 4/5 you are saying 3/4 OF 4/5

So you can make a problem where 4/5 of something is leftover (perhaps in food? Or a job?) and say a person finished 3/4 of that leftover whatever. The question would be: how much of the WHOLE thing did the person finish?

Ex/

Bob and Jon are arranging books from a box. Jon arranges 1/5 of the books, leaving the rest to Bob. Bob arranges 3/4 of the rest. How much of the whole box of books did Bob arrange?

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So in this problem, Jon arranged 1/5 of the books. Which means, the “rest” is 4/5 of the whole box left for Bob.

Bob decides to only 3/4 OF that 4/5 that is left for him.

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The question asks: How much OF the whole box of books did Bob arrange?

To find that, you would do 3/4 x 4/5.

3/4x4/5 = 12/20 and when simplified, (divide the numerator and denominator by 4)

=3/5

That will be the answer. Bob arranges 3/5 of all the books.

Hope this helps!!

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

think the answer would beb