2 Ahmad's Continual Assessment results slip was accidentally tom. Part of his mathematics and science marks are missing. 83 785 English Mother Tongue Mathematics Science Average al 75 a) b) What could possibly be Ahmad's marks in mathematics? What could possibly be Ahmad's marks in science?
Jawab:
a. 70 to 79
b. 60 to 69
Penjelasan dengan langkah-langkah:
average = 75
sum = 4 × 75 = 300
english + mother tongue = 83 + 78 = 161
so
math + science = 300 - 161 = 139
then
if
mat = 70 → science = 69
mat = 71 → science = 68
...
mat = 79 → science = 60
so
possibly mat → 70 to 79
possibly science → 60 to 69
and its not help anything
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