# Molly completes 3/10 of her science project in 4/5 hour. How much of her science project does Molly

Molly completes 3/10 of her science project in 4/5 hour. How much of her science project does Molly complete per hour?

## This Post Has 4 Comments

1. Expert says:

8u18w45x4a18

step-by-step explanation:

1

simplify   —

2

1

((•(u9))•(w17))•(•((4•(a3))•(•(•a15)•u9))

2

equation at the end of step   2   :

a15

((•(u9))•(w17))•(•((4•(a3))•(•(•u9))

2

equation at the end of step   3   :

u9a15

((•(u9))•(w17))•(•((4•(a3))•(•(

2

equation at the end of step   4   :

-u9a15

((•(u9))•(w17))•(•(22a3•w28))•

2

equation at the end of step   5   :

-u9a15

((0 -   ((22u9 • w17) • x4)) • 22w28a3) •

2

step   6   :

multiplying exponential expressions :

u9 multiplied by u9 = u(9 + 9) = u18

multiplying exponential expressions :

a3 multiplied by a15 = a(3 + 15) = a18

dividing exponents :

24   divided by   21   = 2(4 - 1) = 23

final result :

8u18w45x4a18

2. tytybruce2 says:

3/8 project per hour

Step-by-step explanation:

Take the part of the project done and divide by the time

3/10 project ÷ 4/5 hours

Copy dot flip

3/10 * 5/4

Rewriting

3/4 * 5/10

3/4 * 1/2

3/8 project per hour

3. rgilliam3002 says:

3/8

Step-by-step explanation:

3/10 div 4/5

Divide 3/10=0.3 by 4/5=0.8 by multiplying 3/10=0.3 by the reciprocal of  4/5=0.8.

3/10x(5/4)

Multiply 3/10 =0.3 times 5/4 =1.25 by multiplying numerator times numerator and denominator times denominator.

3x5/10x4

Do the multiplications in the fraction 3×5/10x4

15/40 = 0.375

Reduce the fraction  15/40 = 3/8 =0.375 to lowest terms by extracting and canceling out 5.

3/8

4. Expert says:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.