$Let \: x \: be \: the \: time \: which \: Laura \: worked \\ The \: time \: Tim \: worked:x - 10 \\ The \: time \: Eric \: worked:2x \\ We \: have \: an \: equation:x + x - 10 + 2x = 210 \\ < = > 4x = 220 \\ < = > x = 55 \: (hrs) \\ So \: Laura \: worked \: for \: 55 \: hours \: on \: the \: campaign.$

3 0

4 years ago

What is 5 over 10 times 5

Marina86 [1]

Answer: 2.5

Step-by-step explanation:

5/10 * 5

5 becomes 5/1

Multiply 5*5 and get 25

Multiply 10*1 and get 10

Divide 25/10 and get 2.5

Remember: When multiplying decimals move to the RIGHT. When dividing decimals move to the LEFT

Example Multiplying: 2.465*100

Before: 2.465

After: 246.5

Example Dividing: 156.798 divided by 100

Before: 156.798

After: 1.56798

Hope this helps!!!!

8 0

3 years ago