Question

If the cost of 20 flowers is $4.2 the cost of 4 flowers is what

Answer 1

$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

Answer 2

20 flowers = 4.2 $ = 420¢

20/5=4 flowers

420/5=84¢

4 flowers = 84¢=0.84$