Reciprocals

Which among the given reciprocal is correct

a. 3/15x1/3= 1
b. 3/20x20/3=1
c. 7/14x7/7=1
d. 34/3x34/34=1

Result

x = (Correct answer is: b)

Step-by-step explanation:

$$\begin{gathered} b=3\mathrm{/}20\cdot 20\mathrm{/}3=1 \\ x=b \end{gathered}$$

Try another example

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