The study of mathematics is apt to commence in disappointment.
-- Alfred North Whitehead
Joan has 3 kids, twin girls and a boy who is 3 years younger than the twins.
All 3 kids are under 10 years of age. Joan is 28 years old.
Writing the kid's ages, youngest first, we get a three digit number.
Joan's age is exactly divisible into this three digit number.
The quotient of that division is equal to the sum of the ages of the 3 kids.
How old are the kids?
Let the age of the twins be y.
Then the three digit number be (y-3)yy.
And the sum of their ages is (y-3)+y+y.
Now, 28 = [(y-3)yy]/[(y-3)+y+y]
And y must be less than 10.
By trial and error,
If y=9, [(y-3)yy]/[(y-3)+y+y] = 699/24 is not equal to 28.
If y=8, [(y-3)yy]/[(y-3)+y+y] = 588/21 = 28 is the correct value.
Thus the twins are 8 years old,
And the boy is y-3 = 8-3 = 5 years old.
Why do Chinese men eat more rice than Japanese men?/There are more Chinese men than Japanese men.
(Student Answer).. To remove air from a flask, fill it with water, tip the water out, and put the cork in quick before the air can get back in.
Points that are collinear are on the same line. /TRUE
There was an old man who said, \"Do
Tell me how I should add two and two.
I think more and more
That it makes about four --
But I fear that is almost too few.\"
Old tanners never die, they just go into hiding.