Question

1 kg of cashews costs Rs. 100 and 1 kg of walnuts costs Rs. 120. If a mixture of cashews and walnuts is sold at Rs. 105 per kg,then what fraction of the total mixture are walnuts?

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Answer 1

Answer:

cashew= 3/4 ,

walnut =1/4

Explanation:

Cashews content by x per kg . So walnuts are 1-x per kg. Now x*100+(1-x)*120=105 so 100x+120–120x=105 or 20x=120–105=15 or x=3/4 so walnuts will be 1/4.

Answer 2

Answer:

7/8

Explanation:

let the cashew costs=100$per kg

the walnuts costs=120$per kg

then

price of mixed=105$per kg

fraction=mix/walnuts

=105/120

=21/24

=7/8