The answer would be 43.7 because 430 divided by 10 is 43 and the extra 7 would be .7
        
                    
             
        
        
        
In five weeks, there are 35 days. So, the average drop in temperature per day is 40/35 = 8/7 degrees per week. Then in 1 week, 8/7 degrees per day * 7 days per week = 8 degrees per week.Therefore there are 8 degrees drop of temperature in 1 week.