Question

найти 2/3, 1/2, 3/4, 2/5, 3/10 от 1 минуты

Answer 1

1) 2/3=60/3*2=40
2) 1/2=60/2*1=30
3)3/4=60/4*3=45
4)2/5=60/5*2=24
5)3/10=60/10*3=18