Respuesta :

Solanj112

(a) 10% of x = 9

x = 9 ⋅ (100/10)

x = 90 kg

(b) 12% of x = 12/100 of 90

Weight she lost = 10.8

Her new weight = 90 - 10.8

= 79.2kg

a) 9x 10=90
b) 10%=9 so 2%= 1.8
Now add 9 and 1.8 to get 10.8kg as your answer

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