Question

Transformați in secunde :

a)2 supra 5 minute

b)3 supra 4 minute

c)7 supra 30 minute

d)11 supra 12 minute

e)13 supra 15 minute

f)1 supra 60 minute

Answer 1

a)   2/5 min = (2/5) * 60 = 120:5=24 s 
b)   3/4 min =(3/4) * 60 = 180:4=45 s
c) 7/30 min =(7/300*60 =  7*2 =  14 s
d) 11/12 min=(11/12)*60= 11*5=  55 s
e) 13/15 min=(13/15)*60= 13*4= 42 s
f)    1/60 min= (1/60)*60 =             1 s