Question

if sarah scored an 80, 95, 75 and 90 average on her first four test, what mush she score on her next test to get an average of 88

Answer 1

To find out what score Sarah needs on her next test to achieve an average of 88, we can set up an equation. Let x represent the score she needs on the fifth test:

(80 + 95 + 75 + 90 + x) / 5 = 88

Now, let's solve for x:

(340 + x) / 5 = 88

To isolate x, first multiply both sides of the equation by 5:

340 + x = 440

Now, subtract 340 from both sides to find x:

x = 440 - 340

x = 100

Sarah needs to score 100 on her next test to achieve an average of 88.