Answer:
40
Step-by-step explanation:
2/5 and 3/8
The common denominator is 5×8
Which is 40
[tex] \frac{2}{5} \frac{ \times }{ \times } \frac{8}{8} = \frac{16}{40} \\ \frac{3}{8} \frac{ \times }{ \times } \frac{5}{5} = \frac{15}{40} [/tex]
so,the common denominator is 40
