Anonymuz9927 Anonymuz9927

09-04-2018
Mathematics

contestada

Joe is 5 years older than sally. in 15 years joe will be 3 times as old as sally is now. how old is sally now

Respuesta :

YunaTuna YunaTuna

09-04-2018

Lets set up an equation for this:
Let J = Joe
S = Sally

J = 5 + S
15 + J = 3S

Now solve for S (Sally) by substituting J (Joe) in the 2nd equation:
15 + (5 + S) = 3S
20 = 2S
S = 10

Therefore Sally is 10 years old.

Answer Link

Otras preguntas

1. How many grams of iron (II) oxide can be produced from 3.4 g of iron in this balanced equation? 4Fe +3022Fe₂O3 2. How many grams of magnesium carbonate is pr

the cone shaped game piece is made of metal with a mass of 9.2g/cm3 what is the mass of the game piece

2. Find the solution of each differential equation. (a) y/2y-8y = 0 (b) 25y/- 20y + 4y = 0 (c) y + 2y + 2y = 0 2. Find the solution of each differential equatio

3. The total weight of the luggage on the flight is 4,338 pounds . What is the weight written in tons and pounds ？

“But I scarcely observed this; rage and hatred had at first deprived me of utterance, and I recovered only to overwhelm him with expressive of furious detestati

MN= cm Help me please!! Stuck on this thanks:)

03.08 How Can We Solve Local ProblemsWhat is your chosen issue?Why is this issue a problem in your state or local area?What government agencies and citizen grou

Amy simplified this complex fraction problem. Negative 2 and one-half divided by five-fourths = Negative five-halves divided by five-fourths = negative five-hal

If f(x) = 4x-x², find square root f(3/2)

In how many ways can a 7 person committee be chosen from a group of 10 people?