If he ate 6/8 of the pizza, that means 2/8 is left.
2/8 simplify it, by dividing it by 2 and your answer is...
IT'S 1/4
X+y=1770
9x+4y=14680
x=1770-y
9(1770-y)+4y=14680
15930-9y+4y=14680
-5y=-1250
5y=1250
y=1250/5
y=250
children attended=250
The answer to question 4 is C, (16,20)
392065.018 could be rewritten as 302965.018. Here I have moved the "9" two places to the right.
Can't understand your langrage