John and Rob's Bank Accounts Balances

John and Rob's bank accounts balances are such that if John gets $400 from Rob they will be in the ratio 2 to 1, but if Rob receives $580 from John, their ratio will be 1 to 4. What are these two guys' balance?


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Answer:
John: $1000 and Rob: $1100

How many tourists?

Between 80 and 100 tourists hired a ferryboat for a trip to the sea. Each tourist paid $x.00; where the total was $3589.00. How many tourists were on the ferryboat?

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Answer: 97 tourists.
37 * 97 = 3589
Note that x and the number of tourists both should be integer numbers (no fractions).

Identify the Existing One (Medium)

In the previous post, you did one easy level of "Identify the Existing One". In this post try one medium level!

Study the following four patterns for two minutes:

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Now, look at the following patterns and identify which one looks familiar!

A

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D

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Answer: D

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Identify the Existing One (Easy)

Study the following four patterns for one minute:

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Now, look at the following patterns and identify which one looks familiar!

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Answer: C

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Where are the lieutenants?

In the following camp, five lieutenants are strategically in five different tents. Each tent has a number. The total of numbers for those five tents is 50. The lieutenants' tents are not in horizontal, vertical or diagonal lines.

In 2 minutes, you should identify all the lieutenants' tents!

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Answer: