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Set up a proportion.

Cross multiply:

Divide 20 to both sides:

So it will take 62.5 minutes for her to complete the worksheet.
Gina is taller. The difference between both of their heights is 4 cm.
Answer:

Step-by-step explanation:
In any "solve for" scenario, you identify what operations are performed on the variable of interest, then undo them in reverse order.
Here, the square root of d is multiplied by a constant. To undo these operations, we first divide by the constant. That gives ...

Then, we square both sides of the equation to undo the square root:

This matches choice C.
Answer:
what is the question you only gave the problem
Step-by-step explanation: