# How many white tennis balls did the school originally order for?

23 views

For a tennis tournament, school ordered an equal number of yellow and white balls.
The shop delivered 30 extra white balls, making the ratio of yellow balls to white balls 1/11 : 1/9.
How many white tennis balls did the school originally order for?

posted Jan 10
Looking for solution? Promote on:

Similar Puzzles
+1 vote

Five mums each have four sons that each have three tennis balls.
If a half of a half of the tennis balls are not green, how many of the tennis balls are green?

+1 vote

As per the will of a late farmer, his property would have to be divided in the following way.
The eldest got half of the land and an added 2 acres. Second son received half of the remaining land plus 2 acres. Third son got half of the remaining +2 acres. But as the fourth son took half of the remaining plus 2 acres of land, there was nothing left for the fifth son.

How many acres of land did the farmer originally have?

+1 vote

You've bought your weekly egg supply at the local farm store. The first morning you have company for breakfast and use half the eggs plus one-half an egg. The next morning you use one-half of what's left plus one-half an egg. The third morning you use one-half of what's left plus one-half an egg, and on the fourth morning, you're down to one solitary egg, so you make French toast. In all this cooking, you've never had one-half an egg to carry over to the next day.
How many eggs did you buy originally?