how do i solve this?

Question

Angela worked a total of 45 hrs at mcdonalds and toys r us. she worked twice as many hrs at mcdonalds than toys r us. HOw many hrs did she work at mcdonalds? HOW DO YOU DO THIS??!?!?

Answer 1

let x be the number of hours Angela worked for toys r us.
then she worked 2x hours at mcdonalds

x + 2x = 45
3x = 45
x = 15

Angela worked 15 hours at toys r us and 30 at mcdonals.

Answer 2

two equations in two unknowns!

let M = hrs at McDonald's
T = hrs at Toys

1) M + T = 45, total hours worked
2) M = 2T, she worked twice as many at McDonald's.

subs 2) into 1), or

1) M + T = 45 becomes
(2T) + T = 45 or
3T = 45, so
T = 15. she worked 15 at Toys R Us.

So she worked 30 hrs at McDonald's.

Answer 3

I'm probably wrong but....

45/ 3 = 15

15 hours worked at toys r us
muliply that by 2 = 30 hours

Therefore Angela worked 30 hours in MacDonalds.

Answer 4

x = hours at McD.
so 2x = hrs at toys (twice as many as Mcd)
so 3 x = 45 hrs (total hrs)
so x = 15 (45 divided by 3)
so 15 hrs at Mcd, and 30 hrs at Toys.

Answer 5

let the hrs she worked in Mc donalds be x & the hrs worked in toys r us be y
so
x+y=45
x=2y
so substitute x=2y in x+y=45
so
x+y=45
2y+y=45
3y=45
y=45/3
y=15

the hrs worked at toys r us is 15 hrs, the hrs worked at mcdonalds is 15*2=30hrs

check
x+y=15+30=45

Answer 6

Divide 45 by 3. Thats 15 hours. Now if she worked double at mcdonals, the she worked half at toys r us. that means she worked

30 Hours at McDonals
15 hours at Toys R Us

Answer 7

x = the number of hours that she worked at Toys R US.
Since she worked twice as many hours at McDonalds that she worked at Toys R US. 2x = number of hours at McDonalds.

Add them together x+2x becomes 3x

3x = 45 hours.

Solve for x.

Answer 8

M+T = 45, M for time at mcdonalds and T for toys r us
M = 2T
now sub in
2T+T=45
3T=45
T=15
M=2T=2*15=30

Answer 9

Is this a linear problem?

let x= hours worked at mc donalds
let y= hours worked at toys r us

x+y= 45

y=2x

Now we us substitution:

x+2x=45

3x=45

now you divide 45 by 3 which equals 15

So she worked 15 hours at mc donalds, 45 minus 15 equals 30 , so she worked 30 at toys are us.

Answer 10

x mcdonalds, y is toys r us.

x+y=45
x=2y

Substitute to get: 3y=45, y=15.

If y = 15, x = 30