Answer:
26/33
Step-by-step explanation:
The process is:
0.787878
78.7878
78/99x then simplify
<span>50-8t<90
50-90<8t
-40<8t
8t>-40
t>-5
Solutions should go to the right.
Mary probably was solving it as following
</span>50-8t<90
<span>-8t<90-50
-8t<40 (here, when she divided both sides by -8, she had to change sign < to the sign >)
But she did not change the sign, and got
t<-5
</span>
Multiply 20 by 37. This is 740. Divide this by 2, this is 370. She will donate $370 to charity
