Easy Puzzles 

Workings

Hint
How many miles are vowels (AEIOU) worth?

Answer
11,000 miles.

Each vowel (AEIOU) is worth 1,000 miles, each consonant is worth 2,000 miles.

Double-Checking
Ethiopia has 5 vowels (EIOIA = 5 x 1,000), and 3 consonants (THP = 3 x 2,000), for a total of 5,000 + 6,000 = 11,000 miles.

Workings

Hint
Start by using clues (1) and (4), and then look at clues (5) and (2) to find who wore the green T-shirt.

Answer
        Wore    Paint
Alex    red     red
Billie  yellow  blue
Charlie green   yellow
Drew    blue    green

Reasoning
By (1), Billie used Blue paintballs:
           Wore    Paint
   Alex
   Billie          blue
   Charlie
   Drew

By (4), Drew used Green paintballs and wore a Blue T-shirt:
           Wore    Paint
   Alex
   Billie          blue
   Charlie
   Drew    blue    green

By (5), Alex was the only person who used paint that was the same colour as their T-shirt, which means by (2) that Charlie wore the Green T-shirt and used Yellow paintballs:
           Wore    Paint
   Alex
   Billie          blue
   Charlie green   yellow
   Drew    blue    green

This leaves Alex with the Red paintballs, and by (1), the Red T-shirt.
           Wore    Paint
   Alex    red     red
   Billie          blue
   Charlie green   yellow
   Drew    blue    green

Leaving Billie wearing Yellow.
           Wore    Paint
   Alex    red     red
   Billie  yellow  blue
   Charlie green   yellow
   Drew    blue    green

Workings

Hint
Look at the vowels (AEIOU).

Answer
7.00pm.

Each vowel (AEIOU) of the country is worth 2 hours, and each consonant is worth 3 hours.

The time shown is the number of hours past midnight of the return trip.

Workings

Hint
One answer changes Warm to Worm.

Answer
WARM, WORM, WORK, CORK, COOK, COOL

or

WARM, WORM, WORD, WOOD, WOOL, COOL.