2. The teacher assigned some math homework. Since Xiao Ming's foundation is not good, Xiao Ming received 20 more questions than Xiao Wang. If the ratio of the number of questions received by the two is $4: 3$, then Xiao Ming needs to complete $\qquad$ questions at home.
【Answer】 80
【Solution】Let's assume Xiaoming received $4 x$ questions, then Xiaowang received $3 x$ questions. According to the problem, $4 x-3 x=20 \Rightarrow x=20$, so Xiaoming needs to complete $4 x=4 \times 20=80$ questions.