Разность двух чисел 60, что составляет 40% вычитаемого. найдите уменьшаемое.
lovedeutschlan
3
20.05.2019 01:20
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3
Составляем пропорцию
60-40%
x - 100% и решаем ее
40x=60*100
40x=6000
x=6000/40
x=150 - это вычитаемое
150+60=210-это уменьшаемое
можно и без пропорций:
60*100:40=150-вычитаемое
150+60+210-уменьшаемое