Easy Puzzles 

Workings

Hint
I bought at least 8 of each stamp.

Answer
Eight lots of 11p, 17p and 21p, and nine lots of 3p and 9p.

Reasoning
For three denominations of stamp I was asked to buy 8 of each, and for the other two denominations I had to buy 9 of each.

So I had to buy at least 8 of all five denominations.

This would be for a total of 8 x (3 + 9 + 11 + 17 + 21) = 488p = £4.88.

The remaining 12p has to buy the remaining 2 stamps, which must have been 3p and 9p.

Double-Checking
9 x 3 = 27
9 x 9 = 81
8 x 11 = 88
8 x 17 = 136
8 x 21 = 168

For a total of 27 + 81 + 88 + 136 + 168 = 500p = £5.

Workings

Hint
The question is written in English, but not in its usual order.

Answer
32.

Reading one letter from the top row and then one from the bottom row, the puzzle reads: 'How many letters does this puzzle have'.

Workings

Hint
There are currently two answers. One answer contains 7 letters, and starts with the letter B. The other contains 4 letters, and starts with the letter S.

Answer
While driving their car at a reckless speed, the driver was distracted by their dog barking. Luckily, they managed to complete the braking manoeuvre without crashing.

Alternative Answer
While driving their car at a reckless speed, the driver was distracted by their dog Spot. Luckily, they managed to complete the stop manoeuvre without crashing.

Workings

Hint
The answer is not 15.

Answer
19 bottles.

Reasoning
From the initial 77 bottles, 75 bottles can be recycled for 15 new full bottles.

Once those are drunk, Alex will have 17 empty bottles (15 plus the 2 extra empty bottles).

From the 17 empty bottles, 15 bottles can be recycled for 3 new full bottles.

Once those are drunk, Alex will have 5 empty bottles (3 plus the 2 extra empty bottles), which can be recycled for one final full bottle.

Giving a total of 15 + 3 + 1 = 19.