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lorasvet [3.4K]

3 years ago

14

Lashonda has scored 69 , 65, and 77 on her previous three tests. What score does she need on her next test so that her average (

mean) is 69?

1 answer:

Anna71 [15]3 years ago

8 0

Answer: 65

Step-by-step explanation:

We know that her three tests are 69,65,77 so far

in order to get her average at 69 we need to do the following:

69+65+77+x=(69x4)

211+x=276

x=276-211=65

if she will get a 65 her average will be 69

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