PDA

View Full Version : Help with Powerprep Ques on berries



Marsh
10-10-2004, 06:50 PM
Hi Everyone

I am struggling to work out the following question about different berries from powerprep. Any advice on how to tackle this question will be much appreciated.

Please see attached screenshot for the question and the correct answer.

Thanks in advance,

Marsh
10-10-2004, 07:10 PM
It seems I have posted too soon! I have already worked out the answer. If anyone else is interested:

B - Blueberries - 91 total
S - Strawberries - 91 total
R - Raspberries - 87 total

See attached diagram with this answer.

We want BS:

RS + BS = 41
BR + RS = 38
BR + BS = 39

Add them all up:
2RS + 2BS + 2BR = 118

Then divide by 2:
RS + BS + BR = 59

Then since RS + BR = 38, we can see that BS = 21
So there it is. Hope it helps,