Answer:
first discount for Q7 is $54.3915
the next discount is $48.95235
for Q8 is
Explanation:
you are a very nice person for helping your mom. good luck for this!
ok let's work on question 7 first.
$63.99 is the cost of a skateboard.
15% of 63.99 = 10% + 5%
10% of 63.99 = 6.399 (move the decimal one place to the left)
5% of 63.99 = 1/2 of 6.399
1/2 x 6.399 = 3.1995
6.399 + 3.1995 = 9.5985
ok, so that's 15% of 63.99
now we need to take away 9.5985 from 63.99
63.99 - 9.5985 = 54.3915
the discount price of the skateboard is $54.3915
a further 10% is $5.43915
so take off that from the discount,
54.3915 - 5.43915 = 48.95235
the final price is $48.95235
QUESTION 8
shop A = 6.95 x 40
6.95 x 40 = $278
shop B = 20% of 325
20/100 * 325 = 65
325 - 65 = 260
therefore, shop B is cheaper.
hope this helped, good luck!