1 |
6 |
1 |
6 |
1 |
7 |
1 |
42 |
甲班人數(shù):90-42=48(人);
解法二:乙班人數(shù):(90?14×6)÷(1?
1 |
7 |
=6÷
1 |
7 |
=42(人);
甲班人數(shù):90-42=48(人);
解法三:設(shè)甲班有x人,則乙班有(90-x)人,
則
1 |
6 |
1 |
7 |
1 |
6 |
90 |
7 |
1 |
7 |
x=48;
乙班人數(shù):90-x=90-48=42(人);
答:甲班選出48人,乙班選出42人.
1 |
6 |
1 |
7 |
1 |
6 |
1 |
6 |
1 |
7 |
1 |
42 |
1 |
7 |
1 |
7 |
1 |
6 |
1 |
7 |
1 |
6 |
90 |
7 |
1 |
7 |