c$.$ Considering a CDMA system, the information sequence is $b(t),$ chip code for the first user is

$c_1(t)$ and the chip code for the second user is $c_2(t).$ For both $c_1(t)$ and $c_2(t),$ the duration of

one chip code bit is $1$ microseconds. The duration of one information bit is $5$ microseconds.

$m_1(t)$ and $m_2(t)$ are the CDMA sequences of the first and the second users, respectively. Find

the data rates of $b(t),c_1(t),c_2(t),m_1(t)$ and $m_2(t)$ in Mbps$.$