Jane has a average score of 73% on three quizzes. What must she score on the next quiz to have an average of 78%?
1 answer:
Answer:
93
Step-by-step explanation:
The average is calculated as
average =
On 3 quizzes
= 73 ( multiply both sides by 3 )
sum = 219
On 4 quizzes, letting x be the score on fourth test
= 78 ( multiply both sides by 4 )
sum + x = 312 , that is
219 + x = 312 ( subtract 219 from both sides )
x = 93
She must score 93 on the next quiz
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Answer:
Pedro got 1486 and Ricky got 1202 hits
Step-by-step explanation:
We have that, teammates Pedro and Ricky together got 2688 base hits last season.
This means , where p is the number of hits Pedro got and r number of hits Ricky got.
Also Pedro had 284 more hits than Ricky.
This gives us:
We substitute this last equation into the first one to get:
2r=2404
Divide by 2 to get:
r=1202
Therefore p=1202+284=1486