need answer fast

Time left 1:58:06 In an Arab country, the broadcast TV takes place in the frequency range of 320-620 MHZ. This frequency range is shared equally into 30 channels. These are numbered from channel 20 at the lowest frequency up to channel 49 at the highest. If each TV channel occupies the same bandwidth in the 320-620 MHz frequency range, what is the bandwidth available to each channel? (4 marks). ii. Which frequencies are occupied by channel 20? (2 marks) ili. Which frequencies are occupied by the 5th broadcasting channel? (4 marks) 1