a student scores 71 out of 100 on a test. if the maximum score on the next test is also 100, what score does a student need to maintain atleast an average of 78

Question

mrhoola · Answer

This is my logic : 
 x -  represents total points earn on exam
200 - total points possible 
0.78 - desired average

mrhoola · Answer

x/200 = 0.78

Now we must solve for x to find the total points earned to obtian an average of 78 % in the class

mrhoola · Answer

x = 156 .... Do you know what to do next ?

erniellyd28 · Answer

divide 78 into 156?

mrhoola · Answer

sorry , we already know that on the first exam the student got 71 points , so  now we need to determine what is 156 - 71 . those points would determine what score the student needs to get on the next exam

erniellyd28 · Answer

85

mrhoola · Answer

156 represent total points earned

total points earned = 1st exam points + 2nd exam points

mrhoola · Answer

yes !

erniellyd28 · Answer

so my answer is 85?

mrhoola · Answer

ye

erniellyd28 · Answer

thank you very much i am very sorry i am not good at math at all. this subject has always been my weakness

erniellyd28 · Answer

if its ok can we do one more problem please?

mrhoola · Answer

you gotta start a new thread , Close this problem and make a new one for your next question

erniellyd28 · Answer

oh ok thank you very much :-)