The cost price of 16 notebooks is equal to the selling price of 12 notebooks.Find the gain per cent.
1 answer:
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Answer:
Step-by-step explanation:
Answer:
x = 4
Step-by-step explanation:
Using the sine ratio on right triangle KJL
and the exact value sin30° =
sin30° = =
=
=
( cross- multiply )
2JL = 8 ( divide both sides by 2 )
JL = 4
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Using the sine ratio in right triangle JLM
and the exact value sin45° =
sin45° = =
=
=
( cross- multiply )
x × = 4
( divide both sides by
x = 4