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Question 1:
June has 2
more cookies than Robert. June and Robert combined
have 8 cookies. How many cookies do they each
have?
Let 'x' equal the number of
cookies Robert has.
(We
use 'x' for the person we don't know anything
about)
Therefore
June has (x + 2) cookies.
Combined they
have 8 cookies.
We write this
in the form of an equation and then proceed to
solve it: (An equation is when two things are
equal)
The equation
is solved using the same means as in normal
arithmatic.
- -
------------------8
= The number Robert has + the number June
has
---- ---- - -
-------
Robert--------June
----
-- - -- -------
../
/-- -
- - -
-
/
-----------------
8 = x + (x +
2)
-----------------
8 = 2x +
2-----------(Add
the 'x's together)
-------------8
- 2 = 2x
--------(Take
2 away from each side so that there are only
----------------------------------------------------------------------------numbers
on one side))
----------
-------6
=
2x---------
(Bring
to a single number)
----- -----
6
÷ 2 =
x--------(Divide
both sides by 2 to get a single 'x')
----------
-------x
=
3-------
(x =
Robert)
Click on the answer below you
believe is the correct one
Answer to
question 1:
'A' - Robert
has 3 cookies. June has 6 cookies
'B' -
Robert
has 2 cookies. June has 4 cookies
'C' -
Robert
has 3 cookies. June has 5 cookies
'D' -
Robert
has 5 cookies. June has 3 cookies
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