In a jar, the numbers of white, black and red marbles are in ratio of 5: 11: 8. if the total number of marbles is 144, then how many red marbles are there?

 The number of red marbles in the jar is 48.

Step-by-step explanation:  Given that the number of white, black and red marbles in a jar are in the ratio 5 : 11 : 18. And the total number of marbles in the jar is 144.

We are to find the number of red marbles in the jar.

Let, 5x, 11x and 8x be the number of white, black and red marbles in the jar.

Then, according to the given information, we have

Therefore, the number of red marbles will be

Thus, there are 48 red marbles in the jar.

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation:

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