Answer:
-21
Step-by-step explanation:
-21 x 2 = -42 -42+16= -26
[ Answer ]

[ Explanation ]
Area = 1420
Width = 
Area For Rectangle: Length · Width
Use division to find width:
1420 ÷ 
Convert mixed numbers to fractions:
1420 = 
= 
÷ 
Use mixed multiplication:

= 
Simplify:
= 
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Answer:
15×4=60 and 3 people will be left without a group of 4
Answer = 5 problems per minute
Because you do the number of problems divided by the minutes eg 35/7 = 5