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Proportion

Which one of ...

Question

Which one of the following is a proportion?

A

32: 64 = 1 : 2

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B

1:2 =3:4

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C

22 : 34 = 2 : 2

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D

15: 5 = 7: 8

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Solution

The correct option is A
32: 64 = 1 : 2

In a proportion,

Product of means = Product of extremes

Consider 32: 64 = 1 : 2 ,

Product of means = Product of extremes

$\Rightarrow$ $64 \times 1 = 32 \times 2$

$\Rightarrow$ 64 = 64

So, answer is 32: 64 = 1 : 2

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Similar questions

Which one of the following is a proportion?

a) 32: 64 = 1 : 2

b) 1:2 =3:4

c) 22 : 34 = 2 : 2

d) 15: 5 = 7: 8

Compute each of the following: [4 MARKS]

$(a) 15 + (- 5) + 15 + (- 7)$

$(b) 34 + (- 20) + 16 + (- 10)$

$(c) 32 + 16 + 9 + (- 70)$

$(d) - 3 + (- 2) + (- 5) + 7$

\frac{1 \times 2^{2} + 2 \times 3^{2} + 3 \times 4^{2} + \dots + n (n + 1)^{2}}{1^{2} \times 2 + 2^{2} \times 3 + 3^{2} \times 4 + \dots + n^{2} (n + 1)} = \frac{8}{7}

n =

\frac{(32)^{\frac{2}{5}} \times (4)^{- \frac{1}{2}} \times (8)^{\frac{1}{3}}}{2^{- 2} + (64)^{- 1 / 3}}

Q. Solve the problem:-

\frac{5}{12} \div 112

\frac{12}{17} \div \frac{108}{34}

\frac{8}{15} \div \frac{32}{15}

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