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Key Concepts Quiz 10.4
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Algebraic Modelling Worked Example (22.0K)



1

Kieran is twice as old as Rebecca. The difference in their ages is 6 years. What are their ages?
A)12, 6
B)24, 12
C)24, 18
D)18, 12
2

Three consecutive numbers add to 300. What are the numbers?
A)98, 99, 100
B)99, 100, 101
C)100, 101, 102
D)100, 100, 100
3

The three sides of a triangle are in the ratio 8:7:5. The perimeter of the triangle is 100 cm. Find the measures of the three sides.
A)8 cm, 7 cm, 5 cm
B)38 cm, 36 cm, 26 cm
C)40 cm, 36 cm, 14 cm
D)40 cm, 35 cm, 25 cm





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