D4ianorJLeamotownen D4ianorJLeamotownen
  • 21-12-2016
  • Mathematics
contestada

Peter has five times as much money as david both.if peter gves $28 to david, both of them will have equal amount of money. how much money did peter had in the beginning?

Respuesta :

audreyburkett12
audreyburkett12 audreyburkett12
  • 21-12-2016
Just set up two simple simultaneous equations:
 
First, let P = Peter's starting money
and D = David's starting money
 
P = 5*D  (Peter has 5 times as much as David)
P - 28 = D + 28 (Peter gives $28 to David, and both have the same now)
 
P = D + 56
 
substitution reveals that
 
D + 56 = 5D
56 = 4D
 
Therefore,
David = 14, and Peter = 70
Answer Link

Otras preguntas

How is per capita GDP calculated, and what does it tell us about the economy? Explain
painted a summer landscape with heat-filled shapes known as Summer Afternoon.
why is location an important theme
what was the main impact of the ku klux klan on the south during reconstruction?
In 1917, Congress passed the _____________ Test Act over President Wilson's veto
A nonexample about ratio
what is the treaty of tordesillas
What is 8.6 rounded to the nearest tenth
what addition doubles fact can help you solve 4+5? explain how you know
For exercise, mr.harris walked 1 and 3 fourths miles 5 times last week.how many miles did he walk in all?