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Use the grid to create a model to solve the percent problem.

21 is 70% of what number?



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Use the grid to create a model to solve the percent problem 21 is 70 of what number Enter your answer in the box class=

Respuesta :

carlosego
For this case we can make the following rule of three:
 21 ------> 70%
 x --------> 100%
 Clearing x we have:
 x = (100/70) * (21)
 Rewriting we have:
 x = (10/7) * (21)
 x = 30
 Thus,
 21 is 70% of 30
 Answer:
 21 is 70% of 30

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