Each packet of washing powder carries a token and four tokens can be exchanged for a free packet. How many free packets will I receive
if I buy 64 packets?
Answer :
​(1) 64 packets have 64 tokens. Thus you can get 64/4=16 free packets.
(2) From the 16 packets you will get 16 tokens. These can be exchanged for another 16/4=4 packets.
(3) From the 4 packets you will get 4 tokens which can be exchanged for a free packet.
In total, you will get 16+4+1=21 free packets.

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: