Answer:
the common denominator for <u>1/3 and 1/5 is 1/15 So, 1/3 = 5/15 and 1/5 = 3/15</u>
<em>Step-by-step explanation:</em>
3 and 5 (The denominators) have to have a LCM (least common multiple)
Their least common multiple is <u>15</u>
That makes 1/3 = 5/15
And that makes 1/5 = 3/15
Your Welcome!
They need 7 cars for the field trip.
Step-by-step explanation:
The given is,
27 students are going to field trip
4 students in each car
Step:1
Let, T = Total students are going field trip
X = Students in each car
Y = Number of cars need for field trip
Step:2
From given,
T = 27
X = 4
Step:3
Numbers of cars need for field trip,
Y = 
Y = 
= 
Y = 6.75 ( For the car, we need to convert the answer into whole number)
Y = 7 cars
Result:
They need 7 cars for the field trip, If 27 students are going on a field trip 4 students in each car.
Pick 100 km for D...
<span>This would yield T=100 minutes </span>
<span>Using the question stem we calculate 80 km were traveled in 1h (or 60 minutes).... </span>
<span>This leaves us with 40 minutes (2/3 of an hour) to travel 20km..... </span>
<span>R*T=D </span>
<span>R*2/3=20 </span>
<span>R=30 </span>
<span>Answer A....</span>