Question

A bookstore had
81
copies of a magazine. Yesterday it sold
7/9
of them. How many copies were sold yesterday?

Answer 1

Can someone help me with this

Answer 2

shishi990

Answer 3

shishi990

Answer 4

7/9 of 81 is
\[\frac{ 7 }{ 9 }\times 81\]

Answer 5

\[81 \times \frac{ 7 }{ 9 }= 63\]

Answer 6

\(\dfrac{7}{9} \times 81 = \dfrac{7}{9} \times \dfrac{81}{1} = \dfrac{7 \times 81}{9 \times 1} = \dfrac{7 \times \cancel{9} \times 9}{\cancel {9} \times 1} = 7 \times 9 = 63\)