Wacky Jungle

Algebra Level 2

In the Wacky Jungle, families of animals are all proportioned the same way.

For instance, the giraffe family. Papa giraffe is 18 feet tall. Giraffe junior is 6 feet tall. And Mama giraffe is 14 feet tall.

There is also the elephant family. Papa elephant weighs 5.4 tonnes. Elephant junior weighs 1.8 tonnes. Mama elephant weighs 4.2 tonnes.

There is also the zebra family. Mama zebra weighs 490 lbs. How much does Papa zebra weigh?

(Just put the number)


The answer is 630.

Skull Blade by skull blade , 21, USA

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2 solutions

Reginald McNair
Aug 28, 2014

"Mama" is exactly 7/3 of whatever is measured of "junior" in each proportion and "Papa" is 3 times the proportion of "junior" in each proportion: mama/(7/3)= junior, junior x 3 = papa

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junior,mom,dad = 6,14,18 = 1.8,4.2,5.4, can be concluded that dad=3xjunior, and ((junior+mom)-10%(junior+mom))=dad. So, 90%((1/3 dad)+mom)=dad ; 3/10 dad + 9/10 x 490 = dad ; dad = 10/7 x 441 ; dad = 630

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