A garland of roses contains 20 flowers, and flower costs 15 dollars. A garland of lilies contains 15 flowers, and each flower costs 20 dollars. What is the cost of each of these garlands?
A
3,000 dollars
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B
300 dollars
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C
30 dollars
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D
None of the above
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Solution
The correct option is B300 dollars Roses Garland:–––––––––––––––––
Number of flowers in garland = 20
Cost of each flower = 15 dollars ∴ Cost of roses garland = 20×15=2×15×10=300 dollars
Lilies Garland:––––––––––––––––
Number of flower in garland = 15
Cost of each flower = 20 dollars ∴ Cost of lilies garland = 15×20=20×15=300
(By commutative property 15×20=20×15=300)
Therefore, Cost of each garland = 300 dollars
(b) is the correct option