How do you solve #\frac { 21} { 36} = \frac { 4.8} { d }#?

Question

1063 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-09-23T15:19:12

#d = 8.228571#

Step One: Cross multiply

#21 * color(red)(d) = 4.8 * color(red)(36)#

that gives us

#color(green)(21d) = color(green)(172.8)#

Step two: divide both sides by 21

#(21d)/color(blue)(21) = 172.8/color(blue)(21)#

this gives us the answer ...

#color(darkgreen)(d = 8.228571#

Answer 2 · 2017-09-23T15:20:42

#8.22#

#21/36 = 4.8/d#
Cross multiply
#21d = 4.8*36#
#21d = 172.8#
Divide both sides by #21#
#(21d)/21= 172.8/21#
#=8.22#