Question

I wanted to know if I got the first one right And how to do the second one

Answer 1

Numbers of marbles picked = 4

Number of blue marbles picked = 1

Number of blue marbles in the jar = 100;

Let the total number of marbles in the jar be x;

Then;

`\begin{gathered} (1)/(4)\text{ of x =100} \\ x=4*100 \\ x=400\text{ marbles} \end{gathered}`

There are 400 marbles total.