The size 4 soccer ball sean's team uses should weigh no more than 0.37 kilogram, and no less than 0.31 kilogram. a soccer bag has two balls in it. what is the most they could weigh together? the least?

Maximum weight  = 0.74 kg

Minimum weight  = 0.62 kg

Explanation;

 Let weight of football of Sean's team uses be A.

It is given that, 0.31≤ A ≤ 0.37

The bag has two balls. Both ball has weight in between the above condition.

Maximum weight is achieved when both balls has weight  0.37 kg

 Maximum weight = 0.37 + 0.37 = 0.74 kg

Minimum weight is achieved when both balls has weight  0.31 kg

 Minimum weight = 0.31 + 0.31 = 0.62 kg

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