If the Answer is By kapri

The question could be.........


20+20=40
50-10=40
5x8=40
5+5+5+5+5+5+5+5=40
80-40=40
60-20=40
100-60=40
10x4=40
90-50=40
10+30=40
10+10+10+10=40
20+30=50-10=40
20x2=40
60-30=30+10=40
70-30=40
90-50=40
80-40=40
100-50-10=40
100-60=40
60+40=100-60=40