Step-by-step explanation:
1. 12/72 = 1/6
2. 17/28
3. 11 + x = 20
x = 9
half = x
full = 2x
full = 18 people
4. x + y = 46
x = (3y-2)
substitute x
3y - 2 + y = 46
2y = 48
y = 24
x = 3*24 - 2
x = 70
5. 7/28 = 1/4
Here,
Time: 4 years
Rate: 5%
Simple interest:500$
So, principal:?
We know,
SI=P*T*R/100
500=P*4*5/100
500=20P/100
20P=50000
P=50000/20
P=2500$
So 2500$ is needed to make atleast 500$ interest in 4 years with 5% rate
Idk if X is what you news but here it goes
Answer:
15=24
20=x
cross multiply
15x=24*20
15x=480
divide both sides by 15
x=480/15
x=32
it will take her 32 minutes