Question

Nilai ulangan tania adalah 7,8,7,6,dan 8.jika tania ingin mendapat nilai rata rata ,7,5,maka berapakah nilai ulangan keenam tania?
Tolong dijawab please

Answer 1

Verified answer

(7+8+7+6+8) ÷ 5 = 7.2
(7+8+7+6+8+...) ÷ 6 = 7.5
7.5 × 6 = 45
7+8+7+6+8 = 36
45 - 36 = 9
(7+8+7+6+8+9) ÷ 6 = 7.5

Answer 2

Rata-rata = 7+8+7+6+8+X/6
7,5 = 36+X/6
7,5 x 6 = 36+X
45 = 36+X
45-36 = X
9 = X
jadi nilai ulangan keenam Tania adalah 9

*semoga membantu. sukses selalu ^_^