Age Problems
Zig is twice as old as Zag. In 6 years, the sum of their ages is 60. How old are both now?
Zag is 16, Zig is 32.
Jackson has twice as many quarters as nickels. If he has $9.35 in coins, how many of each coin does he have?
17 nickels, 34 quarters.
Solve for x
3/4x-8=4
x=16
What is another way to write 2:1?
2/1 or 2 to 1
what is the difference between an equation and an expression?
Equations have an equal sign. You solve.
Expression don't have an equal sign. You simplify.
Calvin is 7 and his mother is 37. In how many years will his mother be three times older than him?
8 years
Elena has $2.30 in change. The number of dimes she has exceeds the number of nickels she has by 5. Find how many of each coin she has.
12 nickels, 17 dimes
Solve for a when x(a+c)/2 =b
a= 2b-xc all over x
The ratio of boys to girls in the grade is 3:2. If there are 63 boys, how many girls are in the grade?
42 girls
How old is math
Goes back to around 35000 BCE
Tom is 4 times as old as Jerry. Three years ago, Tom was 13 times as old as Jerry. How old is Tom now?
16 years old
Gabby has $20.85 in her piggybank. If she has 5 more quarters than dimes, how many quarters does she have?
61 quarters
Solve for x
1/2(2x-5)- (1/3x-2) =9
x=57/4
Bob has grades of 75,82 and 90. What must he get on his next test to receive an 85 average?
93%
what is the formula for volume, area and perimeter? (all for a rectangle/rectangular prism and simplified)
Volume=lwh Area=lw Perimeter=2w+2l
Srihith is half as old as hunter. Twelve years ago, Srihith was a third as old as hunter was then. Find the sum of their present ages.
Ender has $4.63. He has 3 more nickels than pennies and twice as many quarters as pennies. How many coins does he have?
35 coins
Solve for all values of x.
|3x+2|=4x+5
x=-1
The average of 3 numbers is 24. If the second number is two more than twice the first and the third is two less than three times the first, find the numbers.
12,26,34
If a donut has a diameter of 8 cm, what is the circumference? round to the nearest tenth of a centimeter.
25.1 cm