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Date November 2016 Marks available 1 Reference code 16N.1.SL.TZ0.T_8
Level Standard Level Paper Paper 1 (with calculator from previous syllabus) Time zone Time zone 0
Command term Write down Question number T_8 Adapted from N/A

Question

Passengers of Flyaway Airlines can purchase tickets for either Business Class or Economy Class.

On one particular flight there were 154 passengers.

Let xx be the number of Business Class passengers and yy be the number of Economy Class passengers on this flight.

On this flight, the cost of a ticket for each Business Class passenger was 320 euros and the cost of a ticket for each Economy Class passenger was 85 euros. The total amount that Flyaway Airlines received for these tickets was 14970 euros14970 euros.

The airline’s finance officer wrote down the total amount received by the airline for these tickets as 14270 euros14270 euros.

Use the above information to write down an equation in xx and yy.

[1]
a.

Use the information about the cost of tickets to write down a second equation in xx and yy.

[1]
b.

Find the value of xx and the value of yy.

[2]
c.

Find the percentage error.

[2]
d.

Markscheme

* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.

x+y=154x+y=154    (A1)     (C1)

[1 mark]

a.

320x+85y=14970320x+85y=14970    (A1)     (C1)

[1 mark]

b.

x=8, y=146x=8, y=146    (A1)(ft)(A1)(ft)     (C2)

 

Note:     Follow through from parts (a) and (b) irrespective of working seen, but only if both values are positive integers.

Award (M1)(A0) for a reasonable attempt to solve simultaneous equations algebraically, leading to at least one incorrect or missing value.

 

[2 marks]

c.

|142701497014970|× 100142701497014970× 100    (M1)

 

Note:     Award (M1) for correct substitution into percentage error formula.

 

=4.68(%) (4.67601) =4.68(%) (4.67601)     (A1) (C2)

[2 marks]

d.

Examiners report

[N/A]
a.
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b.
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c.
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d.

Syllabus sections

Prior learning
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