Answer:
he needs 3 bags i did this test
Step-by-step explanation:
Divide 5.60 by 70 and that's the price per ounce
This happens whenever
or
. More generally,
whenever you start with one of these angles and add any multiple of
, so the general solution would be
, where
is any integer. (Notice that when
, you end up with
.)
138p as 1/4 is half of 50% so double 79p
