In a class of 5 students, average weight of the 4 lightest students is

1.	In a class of 5 students, average weight of the 4 lightest students is 40 kgs.Average weight of the 4 heaviest students is 45 kgs. What is the differencebetween the the maximum and minimum possible average weight overall?
Answer» Answer: SINCE the total weight of the 4 LIGHTEST students is 4 x 40 = 160 kg, we have a + B + c + d = 160. SIMILARLY, since the total weight of the 4 heaviest students is 4 x 45 = 180 kg, we have b + c + d + e = 180.

In a class of 5 students, average weight of the 4 lightest students is 40 kgs.Average weight of the 4 heaviest students is 45 kgs. What is the differencebetween the the maximum and minimum possible average weight overall?

Answer»

Answer:

SINCE the total weight of the 4 LIGHTEST students is 4 x 40 = 160 kg, we have a + B + c + d = 160. SIMILARLY, since the total weight of the 4 heaviest students is 4 x 45 = 180 kg, we have b + c + d + e = 180.

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In a class of 5 students, average weight of the 4 lightest students is 40 kgs.Average weight of the 4 heaviest students is 45 kgs. What is the differencebetween the the maximum and minimum possible average weight overall?​

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In a class of 5 students, average weight of the 4 lightest students is 40 kgs.Average weight of the 4 heaviest students is 45 kgs. What is the differencebetween the the maximum and minimum possible average weight overall?