Answer:
£2.38
Step-by-step explanation:
Write and solve an equation of ratios:
  £1.40       2.5 kg
----------- = ------------
      c          4.25 kg
Cross multiplying, we get:
(£1.40)(4.25 kg) = (2.5 kg*c), or
 
        (£1.40)(4.25 kg)
c = -------------------------- =  £2.38
              2.5 kg
 
        
             
        
        
        
Answer:
If the signs are different subtract the smaller absolute value from the larger absolute value.
 
        
             
        
        
        
Answer: choice C) 19/60
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Explanation: 
Add up the minute values: 19+4+37 = 60
We have a total of 60 minutes. Of that total, 19 minutes is dedicated to news.
Divide the two values (19 and 60) to get the fraction 19/60. We can't reduce from here so we leave it like that.
        
             
        
        
        
1week = 7days so
4weeks = 28 days
So 28 x 640 = 17920
1000grams = 1kg
17920 divide 1000 =17.92
Lee uses 17.92kg in those 4weeks