22-02-2016
Mathematics

contestada

the sum of two numbers is 30. the first number is 1/5 of the second number. what are the numbers?

Respuesta :

apologiabiology apologiabiology

22-02-2016

same question
x+y=30
x is 1/5 of y
x=y/5
subsitute
y/5+y=30
multily both sidse by 5
y+5y=150
add
6y=150
divide both sides by 6
y=25
subsitute
x=y/5
x=25/5
x=5
the numbers are 5 and 25

Answer Link

Otras preguntas

Wht a is the derivative 20x

Which equivalent fractions can you use to find the difference of 5 and 3/13 and 1 and 4/9 ?

Why was kennedy space center named that?

What is the lcm of 6,15?

A piece of furniture has a retail price of $3,200 and is on sale at a 30% discount. how much money will be saved if the piece of furniture is purchased at the s

A section of this dna molecule that codes for a specific inherited trait is called

Explain why it is important to accept your anger?

Factorize8x²+10x-12 = ???Juste tell me if(4x-3) (x+2) is the right answer please.

What is the value of the expression when a = 5 and b = 2? a 2b−3

Suppose Set B contains 69 elements and the total number elements in either Set A or Set B is 107. If the Sets A and B have 13 elements in common, how many eleme