The weight of 63 articles is 7kg .a) what is the weight of 90 such articles. b) how many such articles would weight 5 kg

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Solution

Weight of 63 articles=7kg

Weight of 1 article=7/63=(1/9)kg

a)weight of 90 articles=90(1/9)=10kg

b)
let the number of articles for 5 kg is x.,then,

x(1/9)=5
therefore, x=9*5=45 articles

ie, 45 articles will weight 5 kg.

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