99.4k views
10 votes
If the cost of 20 flowers is $4.2 the cost of 4 flowers is what

2 Answers

4 votes

Answer:

$0.84

Explanation:

Known :

  • 20 flowers cost $4.2

Asked :

  • Cost of 4 flowers

Solution :

20/4.2 = 4/x

Use cross multiplication,

20/4.2 = 4/x

=> 4.2(4) = 20x

=> 16.8 = 20x

Reverse,

16.8 = 20x

=> 20x = 16.8

Simplify and change it to decimal numbers,

20x = 16.8

=> x = 16.8/20

=> x = 168/200

=> x = 0.84

Conclusion :

4 flowers cost $0.84

User Hikari
by
8.5k points
4 votes

20 flowers = 4.2 $ = 420¢

20/5=4 flowers

420/5=84¢

4 flowers = 84¢=0.84$

User Tomglynch
by
8.3k points

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