2 years ago

Find the value of a) 4:12

Mathematics

1 answer:

Alexeev081 [22]2 years ago

4 0

Step-by-step explanation:

1:4 bcos u need to divide both sides by 4

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A 20 kg metal bar made of tin and silver lost 2 kg of its weight in the water. If 10 kg of tin loses 1.375 kg in the water and 5

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Answer:

Ratio of tin to silver in the bar is 2:3

Step-by-step explanation:

We are given the following in the question:

10 kg of tin loses 1.375 kg in the water

Percentage of weight lost by tin =

$\dfrac{1.375}{10}\times 100\% = 13.75\%$

5 kg of silver loses 0.375 kg

Percentage of weight lost by silver =

$\dfrac{0.375}{5}\times 100\% = 7.5\%$

20 kg bar loose 2 kg in water.

Percentage of weight lost by metal =

$\dfrac{2}{20}\times 100\% = 10\%$

Let x be the amount of tin and y be the amount of silver in bar.

Thus, we can find the ratio as:

$\dfrac{x}{y} = \dfrac{\text{Silver's loss - Average loss}}{\text{Average loss - Tin's loss}}\\\\\dfrac{x}{y} = \dfrac{7.5-10}{10-13.75} = \dfrac{2}{3}$

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Each marble bag sold by Deon's Marble Company contains 7 green marbles for every 5 yellow marbles. If a bag has 40 yellow marble

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2 years ago

Find the value of a) 4:12 ​

Find the value of a) 4:12