The fraction $\frac{3}{10}$ is multiplied and divided by an unknown number to get $\frac{21}{70}$ .
$\frac{3}{10}$ × = $\frac{21}{70}$

\frac{1}{1}

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\frac{7}{7}

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\frac{10}{10}

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\frac{70}{70}

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Solution

The correct option is B $\frac{7}{7}$

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Similar questions

Q. Set up an equation and solve it to find the unknown number:
3 is added to three-fourth of a number to get 21.

Q. When

2 \frac{1}{2}

is added to a number and the sum is multiplied by

4 \frac{1}{2}

and then

3

is added to the product and then the sum is divided by

1 \frac{1}{5}

, the quotient becomes

25

. What is that number

A number is added to $2 \frac{1}{2}$ and the sum is multiplied by $4 \frac{1}{2}$ . Then 3 is added to the product and the sum is divided by $1 \frac{1}{5}$ which gives the quotient as 25. What is the number?

Q. By what rational number should

\frac{- 3}{5}

be multiplied to obtain

21

Q. Multiply

2 \frac{1}{3} \times 4 \frac{3}{5}

and divides

\frac{5}{7} \div 20

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The fraction 310 is multiplied and divided by an unknown number to get 2170. 310 × = 2170

The correct option is B 77

The fraction $\frac{3}{10}$ is multiplied and divided by an unknown number to get $\frac{21}{70}$ .
$\frac{3}{10}$ × = $\frac{21}{70}$

The correct option is B $\frac{7}{7}$