Answer:
8
Step-by-step explanation:
Answer:
1.5 hr and 3.5 hr
Step-by-step explanation:
Time in the first part= x
Time in the second part= 5 - x
- 49x+60(5-x)=283.5
- 49x+300-60x=283.5
- 11x=300-283.5
- 11x= 16.5
- x= 16.5/11
- x= 1.5 hr
- and
- 5-x= 5-1.5= 3.5 hr
Answer:
Al is 12 yrs old
Judy is 6 yrs old
Step-by-step explanation:
<u>After</u>
Al=2units
Judy=1unit
<u>Before</u><u>(</u><u>t</u><u>h</u><u>r</u><u>e</u><u>e</u><u> </u><u>y</u><u>r</u><u>s</u><u> </u><u>a</u><u>g</u><u>o</u><u>)</u>
Al=2units-3
Judy=1unit-3
Since 3 times,
3units-9=2units-3
3units-9+3=2units
1unit=6
Answer:
D) x = 12
Step-by-step explanation:
we can change 5/2 to 10/4 and now have:
10/4x-7 = 3/4x + 14
we can subtract 3/4x from each side:
7/4x-7 = 14
add 7 to each side:
7/4x = 21
multiply each side by 4/7:
x = 84/7
x = 12