Each of four test scores in Connie’s class is to be weighted equally. On the first three tests, Connie scored 80%, 90% and 95%.

Question

2 years ago

6

What percent must she score on her fourth test to have an overall average of exactly 90%?

2 answers:

Zanzabum · Answer 1 · 2022-10-02T13:31:10+03:00

Zanzabum2 years ago

7 0

Answer:

95%is the answer

Step-by-step explanation:

Nataly_w [17] · Answer 2 · 2022-10-02T15:33:08+03:00

Answer:

95%

Step-by-step explanation:

We can use the balancing method to do this.. first what is the total below 90?

The total is 10% because 90-80 which was the only percentage below 90 is 10%. Then, what is the total above 90?

The total is 5% because the only percentage above 90 is 95 and 95-90 is 5%

Now we use the balancing method to get from 5-10.

Using the balancing method we get 95%