Students are asked to estimate the number of marbles in a jar Madeline says there’s 965 marbles and actually there are 1016 marbles was her percent error

How was your day?

Step-by-step explanation:

There are several marbles in a box. If 20% of them are red and 25% of the rest are green, then what percent of the marbles in the box are green?

Ad by upGrad

Become a Certified Data Analyst.

Learn data science with R & Python. Also, learn machine learning & big data analytics.

Get the App

6 Answers

Anil Giri

Answered October 17, 2018

Let us assume that there are 100 marbles in the box.

If 20% of them are red then,

No. of red marbles = 20% of 100

= 20÷100 × 100

= 20.

The remaining number of marbles

= 100 - 20

= 80.

No. of green marbles = 25% of 80.

=25÷100 × 80

=20.

So, the percent of green marbles = 20%

step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent