At an examination, two pupils showed up. One of them received 9 points more than the other, accounting for 56 percent of the total. They received the following grades:
A. 39, 30
B. 41, 32
C. 42, 33
D. 43, 34
Answer:C
At an examination, two pupils showed up. One of them received 9 points more than the other, accounting for 56 percent of the total. They received the following grades:
A. 39, 30 B. 41, 32 C. 42, 33 D. 43, 34
Explanation: Their marks should be (x + 9) and x.Then x + 9 = 56/100 (x + 9 + x) (x + 9 + x) (x + 9 + x) (x + 9 + x) (x +14(2x + 9) + 25(x + 9),3 times = 99,33 = x, As a result, their grades are 42 and 33, respectively.