I think that first one represents a function.
So we solve for each
70% of 100=70
students who didn't buy lunch=100-70=30
some of the 70 left so that the students who bought lunch, are 60% of those who are left
we know that the students who didn't buy lunch didn't change number so therefor
100% of students left-60%=40%= students that didn't buy lunch=30 so
40%=30
20%=15
100%=75
there were 75 students lfet in the cafeteria
Answer:
2x +3x =7-13=4+8
Step-by-step explanation:
5x= -6= 12
Answer: sara is 60
Step-by-step explanation: 64 divided by 4 equals 16. 16 plus 44 equals 60
