Current location - Training Enrollment Network - Mathematics courses - In a math exam, the average score of the top ten is 87, and the average score of the top eight is 90. It is known that the ninth place is 2 points more than the tenth place. How many points did the to
In a math exam, the average score of the top ten is 87, and the average score of the top eight is 90. It is known that the ninth place is 2 points more than the tenth place. How many points did the to
In a math exam, the average score of the top ten is 87, and the average score of the top eight is 90. It is known that the ninth place is 2 points more than the tenth place. How many points did the top ten get? If the score of the ninth place is X, then the score of the tenth place is X+2.

X+X-2+90*8=87* 10

2X= 152

X=76

That is, the ninth place scored 76 points and the tenth place scored 74 points; The top ten scored 870 points. If you want to know what the top ten are, it's not easy to do.