Greetings telegram on special code:50cts

Question

Ordinary telegram costs sh 3 for 10 words ,each extra word at 30 ct.
Find the cost of the following telegram.
CHARLES MUSHI BOX 123 MUSHI WISHING YOU A MERRY CHRISTMAS PETER JOHN.
#how can i arrive to the answer,i need your help#

Answer 1

first step: count the words!

Then apply the rates.

Answer 2

The problem is on greeting telegram and ordinary telegram.there are 13 words so how can i apply the rate of charges

Answer 3

so, the first 10 words cost sh 3.

Now, how much for each of the other 3 words?

Answer 4

then you should add cost for first ten words plus cost for extra 3 words plus cost of greeting telegram code which is 50 ct???
3 sh +3*30cts+50cts am I correct?

Answer 5

looks good to me.