Have you learned a theory called Kirchhoff's(not sure about the spellings) two laws?
http://oi51.tinypic.com/2nk2qtg.jpg
I was able to find I1:
simplified and got total resistance=10/3 and V=10(coz parallel)
by putting V=IR
I got 10=I(10/3)
I=3A
How to find the I2?I think my I1 is wrong too.
thanks for reasing.
Here you have to use the Kirchoff's first law (or the current law), which is on any joint of the circuit, .
From this you'll get the current flowing through the middle resistor as
now use the Kirchoff's Voltage law which is on any closed circuit,
add this equation to two closed circuits to find and
you cannot simplify resistors that easily, refer Kirchhoff's circuit laws and your text books, I guess you've already been taught about this laws