What weight will the fourth scale display?


Credit: Brilliant.org

What weight will the fourth scale display? Think carefully! There's a quick and clever shortcut for solving this.

Correct! Wrong!

Let R, C, and D be the weights of the rabbit, cat, and dog, respectively. Each picture lends itself to an equation, giving us the following system: R + C​ = 10, D + R = 20, C+ D = 24, C + D + R = ? If we add these equations together, we get 2C + 2R + 2D = 54. If we divide by 2, we are left with the sum of the weights of each animal: C + R + D = 27.

Spread the love
No Comments Yet

Leave a Reply

Your email address will not be published.

Write to us at

Help us keep currentkids, current! We’d love to hear about your crazy adventures and experiences. Send us your pictures, travel diaries, thoughts on cool new gadgets, gaming experiences and anything else you find interesting!

About Us

Welcome to our entertaining and empowering news source for kids with inquisitive minds! This is a digital space that keeps kids aged 8 and above (and your families!) connected to what’s happening in the world. We filter a wide variety of news, events, and interesting bits of trivia to develop short, relevant, unbiased content in creative formats. We give everyone something to relate to and get engaged with in short bytes of information with a snappy, chatty feel. We believe in encouraging curiosity, creativity and continued learning in our safe digital space.

Why is reading non-fiction important?

This helps curious minds to learn more about the outside world. It also enriches their vocabulary and their general knowledge. Simplified news helps children to express their opinions easily with their friends and family and gives them some perspective on complex issues. Our safe news website will give you parents a useful tool with which to navigate the digital world with your children.

We hope you enjoy our posts!

Biyash & Sunaina