Ratio, SM-Bank 001

A bag contains 3 red marbles, 4 blue marbles and 8 white marbles.

Calculate:

the ratio of red marbles to blue marbles. (1 mark)

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the ratio of white marbles to the total number of marbles. (1 mark)

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the ratio of blue marbles to other colours. (1 mark)

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Show Answers Only

a. \(3:4\)

b. \(8:15\)

c. \(4:11\)

Show Worked Solution

a. \(\text{Red}:\text{Blue}=3:4\)

b. \(\text{Total marbles}=3+4+8=15\)

\(\text{White}:\text{Total}=8:15\)

c. \(\text{Total other marbles}=3+8=11\)

\(\text{Blue}:\text{Other}=4:11\)