bewellplus.gsu.edu
khadijasandy khadijasandy
  • 01-11-2014
  • Mathematics
Answered

the ratio of boys to girls at the movie is 4:7. If there are 21 girls, how many boys are at the movie?

Verified Answer :

konrad509
konrad509 konrad509
  • 01-11-2014

\(7x=21\\ x=3\\\\ 4x=4\cdot3=\boxed{12}\)

Answer Link
Anonymous Anonymous
  • 01-11-2014

\(boys:girls=4:7\\\\girls=21\\\\therefore\\\\boys:21=4:7\\\\\frac{boys}{21}=\frac{4}{7}\ \ \ \ \ |cross\ myltiply\\\\7\ boys=4\times21\\\\7boys=84\ \ \ \ \ |divide\ both\ sides\ by\ 7\\\\boys=84:7\\\\\boxed{boys=12}\)

Answer Link

Related Questions

Which is the best method to prevent a minor cut from becoming infected
what are three ways a rectangle and a square are alike
a diagram shows the part of graph yax2 which is a parabola it also gives me the coordinates 345 How do i find the value of a
Posture can indicate AA number of verbal messages B Gender C Age or culture D Engagement
What is the formula for the volume of a cylinder
An object that weighs 1 pound on earth weighs only 017 pounds on the moon Zachs dog weighs 17 12 pounds on earth How much more does his dog weigh on earth than
What were black codes A laws that made life easier for former slaves in the South B laws that made life easier for former slaves in the North Claws that greatly
James has a 3 black books and 200 yellow books how many books does he have left if he sells 30 green books
How did the Aztecs rule their empire
egiht hundred trillion fiftytwo million four hundred in digit