Jenny's test grades are 93, 89, 96, and 98. If she wishes to raise her average to 95, what does she need to score on her next test?

Jenny's test grades are 93, 89, 96, and 98. If she wishes to raise her average to 95, what does she need to score on her next test?

• A. 100
• B. 99
• C. 97
• D. 95

Answer: (B)

To determine the score Jenny needs on her next test to achieve an average of 95, we first need to find out her current average. The grades she has so far are 93, 89, 96, and 98. We calculate the total of these grades: 93 + 89 + 96 + 98 = 376 Next, we find the current average by dividing the total by the number of tests taken (which is 4): 376 / 4 = 94 Now, Jenny wants her average to be 95 after adding one more test score. Let the score she needs to achieve on her next test be represented as \( x \). After this test, she will have taken 5 tests, and the average will be calculated as follows: (376 + x) / 5 = 95 To find \( x \), we first multiply both sides by 5: 376 + x = 475 Now, subtract 376 from both sides: x = 475 - 376 x = 99 Therefore, in order to reach an average of 95, Jenny needs to score 99 on her next test. This reasoning confirms that the answer is indeed what she needs to achieve

To determine the score Jenny needs on her next test to achieve an average of 95, we first need to find out her current average. The grades she has so far are 93, 89, 96, and 98.

We calculate the total of these grades:

93 + 89 + 96 + 98 = 376

Next, we find the current average by dividing the total by the number of tests taken (which is 4):

376 / 4 = 94

Now, Jenny wants her average to be 95 after adding one more test score. Let the score she needs to achieve on her next test be represented as ( x ). After this test, she will have taken 5 tests, and the average will be calculated as follows:

(376 + x) / 5 = 95

To find ( x ), we first multiply both sides by 5:

376 + x = 475

Now, subtract 376 from both sides:

x = 475 - 376

x = 99

Therefore, in order to reach an average of 95, Jenny needs to score 99 on her next test. This reasoning confirms that the answer is indeed what she needs to achieve