### Brain Teasers

# Half Twin, Double Twin.

I met Ronny and Johnny at the zoo. They are identical twins that like math very much, so they were constantly adding, subtracting, multiplying and dividing any amounts. And they were very good at this, because usually they could make the operation fast and accurate. However, they have a flaw: when the boys were merely counting, they always got the wrong number. Ronny always gets twice the number of items he is counting and Johnny always gets half the number of items counted.

When we were leaving at the afternoon, they were discussing the zoo experience:

A: Did you see all those elephants?

B: Yes, I counted them. They were three times the number of crocodiles I counted in the pool.

A: Oh, I also counted the crocodiles; they were two-thirds the number of butterflies I counted in the garden.

B: Really, I counted the butterflies and they were three quarters the number the long tailed monkeys I counted in the monkey pit.

A: Sure, the long tailed monkeys I counted were just 8 more than the white headed monkeys in the trees.

B: Hum, but the white headed monkeys I counted were one more that the number of giraffes I counted.

A: Oh, well, I counted only 4 Giraffes.

All the above is correct (except for the counting). So, can you tell which brother is which, and how many animals were of each kind?

When we were leaving at the afternoon, they were discussing the zoo experience:

A: Did you see all those elephants?

B: Yes, I counted them. They were three times the number of crocodiles I counted in the pool.

A: Oh, I also counted the crocodiles; they were two-thirds the number of butterflies I counted in the garden.

B: Really, I counted the butterflies and they were three quarters the number the long tailed monkeys I counted in the monkey pit.

A: Sure, the long tailed monkeys I counted were just 8 more than the white headed monkeys in the trees.

B: Hum, but the white headed monkeys I counted were one more that the number of giraffes I counted.

A: Oh, well, I counted only 4 Giraffes.

All the above is correct (except for the counting). So, can you tell which brother is which, and how many animals were of each kind?

### Answer

A is Ronny and B is Johnny.There were:

12 Elephants

4 Crocodiles

6 Butterflies

8 Long tailed monkeys

4 White headed monkeys

2 Giraffes

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