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4 Look at this list of children, showing their present

ages and masses.

a Find an age range of 5 that includes as many children as possible.

b Find the smallest range of weights that includes 5 children.

Name Age Mass

(years) (kg)

Olly 12 24

Elinor 7 14

Latham 11 18

Aimee 13 23

Chelsie 6 13

Kemunto 7 16

Kai-Yan 6 15

Anna 5 13

Zoe 12 17

Kesia 10 16

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