甲箱有桔子100个,乙箱有桔子80个,从甲箱取出多少个桔子放到乙箱后,甲、乙两箱桔子的比是7:11?

问题描述:

甲箱有桔子100个,乙箱有桔子80个,从甲箱取出多少个桔子放到乙箱后,甲、乙两箱桔子的比是7:11?

100-(100+80)×

7
7+11

=100-180×
7
18

=100-70,
=30(个),
答:从甲箱取出30个桔子放到乙箱后,甲、乙两箱桔子的比是7:11.