Question

Calculeaza:
a) [o,(25)-o,25]:0,(02)=

b)[0,(32)-0,32]:618,75=
E URGENT!!!!

Answer 1

a) 0.(25) = 25/99 = 100/396

0,25 = 25/100 = 1/4 = 99/396

0.(02)=2/99

[0.(25) - 0,25] : 0.(02) = 1/8

=( (25/99) - (1/4)) : (2/99)

=( (100/396) - (99/396)) : (2/99)

= (1/396) × (99/2)

= (1/8)

b) 0.(32)=32/99 = 800/2475

0,32 =32/100 = 8/25 = 792/2475

618.75=61875/100 = 2475/4

[0.(32)-0.32]:618.75 =32/6125625

=((32/99)-(8/25)):(2475/4)

=((800/2475)-(792/2475))×(4/2475)

=(8/2475)×(4/2475)

=(32/6125625)