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Whitepunk [10]
3 years ago
14

The ratio of Julia’s peas to Vlada’s peas was 3:2. After Julia gave 15 peas to Vlada, she still had 10 more peas than Vlada. How

many peas did Julia have to start with?
Mathematics
2 answers:
Juliette [100K]3 years ago
5 0
So.. hmm let's say. Julia had originally "j" amount of peas,
and Vlada had "v" amount, so

\bf \textit{Julia(j) had more peas than Vlada(v), by a ratio of 3:2, or }\frac{3}{2}
\\ \quad \\
\cfrac{j}{v}=\cfrac{3}{2}
\\ \quad \\
\textit{now, Julia gave Vlada 15, so v+15, and Julia, is no longer}\\
\textit{3:2 ratio with Vlada, but only has 10 peas more than Vlada}\\
or\\
v+15=j+10
\\ \quad \\ \quad \\

\begin{cases}
\cfrac{j}{v}=\cfrac{3}{2}\implies \boxed{\cfrac{2j}{3}}=v
\\ \quad \\
v+15=j+10\\
----------\\
\boxed{\cfrac{2j}{3}}+15=j+10
\end{cases}

solve for "j", to see how many Julia originally had
Step2247 [10]3 years ago
4 0

Answer:

120 peas did Julia have to start with

Step-by-step explanation:

As per the statement: The ratio of Julia’s peas to Vlada’s peas was 3:2

Let the number be x;

Then;

Julia have number of peas to start with= 3x and Vlada's have number of peas start with = 2x

Also, it given that  Julia gave 15 peas to Vlada, she still had 10 more peas than Vlada.

⇒ 3x - 15 = 2x + 10 + 15

3x -15 = 2x + 25

Add 15 both sides we get;

3x = 2x + 40

Subtract 2x from both sides we get;

x = 40

Number of peas Julia have = 3x = 3(40) = 120

and

Number of peas Vlada have = 2x = 2(40) = 80

Therefore, Julia have to start with 120 peas

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