Question

A herd of dinosaurs made paintings in the sand with their claws. Each baby dinosaur made 151515 paintings and each adult dinosaur made 777 paintings. The entire herd made 208208208 paintings in total, and there were 333 times as many baby dinosaurs as adult dinosaurs. How many baby dinosaurs and adult dinosaurs were there

Answer 1

There were 12 baby dinosaurs and 4 adult dinosaurs making the painting.

Equation

An equation is an expression used to show the relationship between two or more numbers and variables.

Let x represent the number of baby dinosaurs and y represent the number of adult dinosaurs.

Since there was 208 paintings, hence:

• 15x + 7y = 208   (1)

Also:

• x = 3y
• x - 3y = 0   (2)

From equation 1 and 2:

x = 12, y = 4

There were 12 baby dinosaurs and 4 adult dinosaurs making the painting.

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