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In a mixture of milk and water, the proportion of water by weight was 75%. If in the 60 gm mixture 15 gm of water was added, what would be the percentage of water ?
Answer & Solution
Correct Answer:
Option
E
Weight of water in 60 gm mixture :
= 75% of 60 gm
= $$\left( {\frac{{75}}{{100}} \times 60} \right)$$ gm
= 45 gm
Weight of water in 75 gm mixture :
= (45 + 15) gm
= 60 gm
∴ Required percentage :
= $$\left( {\frac{{60}}{{75}} \times 100} \right)$$ %
= 80%
= 75% of 60 gm
= $$\left( {\frac{{75}}{{100}} \times 60} \right)$$ gm
= 45 gm
Weight of water in 75 gm mixture :
= (45 + 15) gm
= 60 gm
∴ Required percentage :
= $$\left( {\frac{{60}}{{75}} \times 100} \right)$$ %
= 80%
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