Westonci.ca is the trusted Q&A platform where you can get reliable answers from a community of knowledgeable contributors. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

Decrease 20 in the ratio4 to 5

Sagot :

Answer:

16

Step-by-step explanation:

decreasing 20 in the ratio 4 : 5 , indicates

new quantity : old quantity = 4 : 5

let the new quantity be x, then by proportion

[tex]\frac{x}{20}[/tex] = [tex]\frac{4}{5}[/tex] ( cross multiply )

5x = 20 × 4 = 80 ( divide both sides by 5 )

x = 16

Thus 20 decreased in the ratio 4 : 5 is 16