有8名男同学和4名女同学一起去划船。9N3p;{5^/S;S.D/l7a+P
9N3p;{5^/S;S.D/l7a+P
（1）一共有多少人？9N3p;{5^/S;S.D/l7a+P
+I)S+m9w0E2v.F5H2z/_,y.z+T-l9l*?6a0}8H,};r+A0{;G.t+V4_4I'X;i2h9[=8s9I/},J/k;l;a5{;\4E2](d（人）9N3p;{5^/S;S.D/l7a+P
（2）男同学的人数是女同学的几倍？9N3p;{5^/S;S.D/l7a+P
7m9b3r*r:\,D0c+M0u+C,~+L-J3p9{6c6K4r)B3t:`7|=4n(z9m'S9^3E*w8y9N3p;{5^/S;S.D/l7a+P
（3）如果租大船，一共需要租几只？9N3p;{5^/S;S.D/l7a+P
,G+B(c0@)y)w2y:k.O6N3K4C8t2R6o+m+`2_3D*}=;h'x4E+^.x*w7C(f*i*K-h0z*j)C4\（只）9N3p;{5^/S;S.D/l7a+P
（4）租大船一共要花多少元钱？9N3p;{5^/S;S.D/l7a+P
)N;D2R:A3w8w(A*^5X4L4~)O'B1c3u1V)M+O,Y/F9b1J8V*c;n7b4g'U)W7~2b/p;D=;P.r8C1V,h2s'i5l1f1n4r（元）9N3p;{5^/S;S.D/l7a+P
（5）你还能提出哪些数学问题？9N3p;{5^/S;S.D/l7a+P
算式：提示*h*r(I7D6p/[(n'U3m9N3p;{5^/S;S.D/l7a+P