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Three friends are travelling by aeroplane and want to pay as little as possible in total for their luggage.
The airline rules are:
Every passenger may carry 10 kg of luggage for free.
Every extra 1 kg above this costs $5.
The maximum amount of luggage any one passenger may carry is 20 kg.
In total, the three friends are carrying four items weighing 6 kg, 7 kg, 9 kg and 12 kg. item of luggage. What is the least total cost for their luggage?
A $20 B $25 C $30 D $35
Anyone may
carry any

Respuesta :

mar3729

Answer:

B.25$

Step-by-step explanation:

to make the money less one of the freinds will carry 9kg and the other 12 kg the last one carries the left luggage weighing 7kg and 6kg which add up to 13kg.

the first freind won't pay anything as he is passing 9kg luggage

the second will pay : 12-10 =2 so 2kg*5$=10$

the last freind will pay 13-10=3 so 3kg*5$=15$

to find the total money the pay we will add 10$ and 15$ which became 25$.

hope this helped.

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