Anurse infuses a dose in 50 minutes. she needs to infuse the dose at a 20% faster rate. how much time does she need ?

The nurse needs 40 minutes to infuse the dose at a 20% faster rate.

Step-by-step explanation:

In order to calculate how much time the nurse needs to infuse the dose, you have to calculate how much is the 20%

The 20% of 50 minutes is obtained multiplying 50 by the factor that represents the 20% which is

= 10 minutes

Now, the time she needs to infuse the dose at a faster rate is obtained as follows:

50 minutes - 10 minutes = 40 minutes.

Notice that you have to subtract the 20% of 50 minutes to the original time to obtain a 20% faster rate.

correct answer:

b.(19,-2)

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step-by-step explanation: