Question

find the equivalent from given image ​

Answer 1

Answer:

15+45=60

Then

60||30=1800/90=20

Next

20||20=400/40=10

Final,

10+40=50

Answer 2

Answer:

50 ohm

Explanation:

15 and 45 are in series

so

r1=15+45=60 ohm

now

r1, 30 and 20 are in parallel so

1/r2=1/60+1/30+1/20

r2=10 ohm

now r2 and 40 are in series so

total resistance is

R=40+10

=50 ohm