Answer:
55/11 hrs
Step-by-step explanation:
rodrigo 12hrs
DaShawn 10hrs
1/12+1/10=11/60
then reciprocate
60/11=5 5/11 hrs
Answer:
x=
15
7
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
8x−
6
2
=x+12
8x+−3=x+12
8x−3=x+12
Step 2: Subtract x from both sides.
8x−3−x=x+12−x
7x−3=12
Step 3: Add 3 to both sides.
7x−3+3=12+3
7x=15
Step 4: Divide both sides by 7.
7x
7
=
15
7
x=
15
7
Answer:
bcd
Step-by-step explanation:
Answer:
$0.90/kg
Step-by-step explanation:
4.50/5=0.90
Answer:
last year 8 boys 12 girls and this year 10 boys 15 girls
Step-by-step explanation:
ratio = 4:6
total ratio = 6 +4 =10
last year
ratio 1 = 20 ÷ 10 = 2
boys = 2 × 4 = 8
girl = 2 × 6 = 12
this year
ratio 1 = 25 ÷ 10 = 2.5
boys = 2.5 × 4= 10
girls = 2.5 × 6 = 15