Question

determine if the following are in proportion 15,45,75,125.

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Answer 1

Answer:

15,45,40,120

we have 15,45,40,120

ratio of 15 to 45=\frac{15}{45}=\frac{15\div15}{45\div15}=\frac{1}{3}=1:3

45

15

=

45÷15

15÷15

=

3

1

=1:3

[HCF OF 40 and 15, 45 is 15]

ratio of 40 to 120=\frac{40}{120}=\frac{40\div40}{120\div40}=\frac{1}{3}=1:3

120

40

=

120÷40

40÷40

=

3

1

=1:3

[HCF of 40 and 120 is 40]

here, 15:4=40:120=1:3 .

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