Step-by-step explanation:
[tex] \frac{6}{8} \times 40 = 30 \\ jane \: got \: 30 \: questions \: correctly \\ that \: means \: that \: jim \: got \: 30questions \: wrong \\ therefore \: the \: questions \: he \: got \: right \: is \: 40 - 30 = 10[/tex]
