# The ratio of a to b is 4/7. If a is 16, how do you find the value of b?

##### 1 Answer

May 6, 2018

#### Explanation:

#"expressing the ratios in equivalent fraction form"#

#rArra/b=4/7#

#"given "a=16" then"#

#16/b=4/7#

#"we can solve using "color(blue)"cross-multiplication"#

#•color(white)(x)a/b=c/drArrad=bc#

#rArr4b=16xx7#

#rArrb=(cancel(16)^4xx7)/cancel(4)^1=4xx7=28#