BrainDen.com - Brain Teasers
• 0

# Mia's Mathematical Mishap

Go to solution Solved by bonanova,

## Question

Mia needed to calculate the volume of a rectangular room. She multiplied the length andthe width correctly but the width had been incorrectly written down, it was one-third larger than it should have been. To make up for this, she lowered the height by one-third, then multiplied it on. She figured this was okay since the width was equal to the height. She then found her volume was off by 20 cubic meters. Why was Mia wrong, and what
was the actual volume?

## Recommended Posts

• 0
• Solution

L x (4/3)W x (2/3)H = (8/9) V = V - 20

(1/9)V = 20

V = 180

She should have multiplied the (too large) width by (3/4
)

## Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

×   Pasted as rich text.   Paste as plain text instead

Only 75 emoji are allowed.

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.