Answer:
Dylan delivered 140 parcels on Wednesday.
Step-by-step explanation:
On Wednesday:
On Wednesday, he delivered x parcels.
Thursday:
10% more than Wednesday, so 100 + 10 = 110% of x = 1.1x
Friday:
50% pless than on Thursday, so 100 - 50 = 50% of 1.1x = 0.5*1.1*x.
THis is equals to 77. So
[tex]0.5*1.1x = 77[/tex]
[tex]x = \frac{77}{0.5*1.1}[/tex]
[tex]x = 140[/tex]
Dylan delivered 140 parcels on Wednesday.
