Mix712

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Class A - 18 students with the score 40%.
Class B - 2 students with the score 80%.
What is the total average score?

If Ann does a job in 4 days, and
Bob does it in 10 days, how long do
they take together? (Nearest to the 10th...)

Mary is 24 years older than Jerry.
6 years ago, Mary was 7 times as old
as Jerry then. How old is Mary?

You borrowed $8000 for 3 years
with a 7% interest rate. What will be
the total amount needed to pay off the loan?

I have 1000 dollars that I want
to split with Tom and Jerry by a ratio
of 3 to 7. How much will Tom get?

The sum of two numbers is 623.
The larger is 14 more than 6 times the smaller.
What is the smaller number?

If you mix 600 ml of 9% alcohol
and 400 ml of 3% alcohol, what %
solution will you get? (Nearest to the 10th.)

There are 220 heads of Chickens and Dogs
together. Altogether there are 640 legs.
How many chickens are there?

If a number is divided by 12 and 13,
the remainder for the both is 1.
What is the smallest possible number?

Mary found 23 eggs. She found 11 more eggs than Tom. Gina was so happy because she found exactly as many eggs as Mary and Tom together. How many eggs did Gina find?

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