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The sum of two currents in 20mA. The larger current is 30 mA more than the smaller current. Find the value of the larger current.

1 Answer

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Let

x ----> large current

y ----> smaller current

we have that

x+y=20 ------> x=20-y ------> equation 1

x=y+30 -----> equation 2

solve the system of equations

equate both equations

y+30=20-y

solve for y

2y=20-30

2y=-10

y=-5

Find out the value of x

x=20-(-5)

x=25

therefore

The value of the large current is 25 mA

User Vien Vu
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