# Algebra Puzzle – Challenge 36

Time to challenge and tease your brain with another great mathematics challenge. If you couldn't solve it, don't worry! Even some very smart people have a hard time solving this puzzle!

## Challenge:

In a small farm, there are 8 hens, 5 chickens, and 4 roosters. A hen eats 2.5 times of a chick and a rooster eats 1.5 times a hen. If all together eat 4000 seeds per day, how many seeds does a hen eat during one day?

**A-** 250

**B-** 280

**C-** 300

**D-** 350

**E-** 400

### The Absolute Best Book** to ****challenge your Smart Student!**

The correct answer is E.

Let H represents the number of seeds a hen eats each day, C represents the number of seeds a chicken eats each day and R represents the number of seeds a rooster eats each day. Therefore,

H + C + R = 4205

H = 2.5 C and R = 1.5 H→R = 1.5 (2.5 C) →R = 3.75 C

Replace the value of H and R in the first equation with their values in the second and third equations:

2.5 C + C + 3.75 C = 4205 → 7.25 C = 4205 → C = 580

H = 2.5 C → H = 2.5 (580) = 1450

A hen eats 1450 seeds in one day.

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