A North Face Jacket costs $65. It is on sale for 20% off. What is the amount of discount?
1 answer:
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Answer:
y = 3
Step-by-step explanation:
The two inner right triangles are similar, thus the ratios of corresponding sides are equal, that is
=
( cross- multiply )
y² = 63 ( take the square root of both sides )
y = =
=
×
= 3