Answer:
At a combined speed of 6 in/min, it takes us 24 mins to clean the wall
Step-by-step explanation:
Since the question did not provide the speed with which each student cleans, we can make assumptions. This is so that we can solve the question before us
Assuming student 1 cleans at a speed of 2 inches per minute, student 2 cleans at a speed of 2½ inches per minute & student 3 cleans at a speed of 1½ inches per minute.
Let's list the parameters we have:
Height of wall (h) = 12 ft, Speed (student 1) = 2 in/min, Speed (student 2) = 2½ in/min, Speed (student 3) = 1½ in/min
Speed of cleaning wall = Height of wall ÷ Time to clean wall
Time to clean wall (t) = Height of wall ÷ Speed of cleaning wall
since students 1, 2 and 3 are working together, we will add their speed together; v = (2 + 2½ + 1½) = 6 in/min
1 ft = 12 in
Time (t) = h ÷ v = (12 * 12) ÷ 6 = 144 ÷ 6
Time (t) = 24 mins
Answer:
90
Step-by-step explanation:
i did the math hope this helps you out
Answer:
D i think
Step-by-step explanation:
Answer:
Ivan got £90 more than tanya.
Step-by-step explanation:
£150/(4+1)
=£150/5
=£30
Ivan: £30 x 4=£120
Tanya: £30 x 1=£30
Ivan - Tnaya=£120 - £30=£90
Hope it helps.
Big town is 5.121 times larger than Small town.
Step-by-step explanation:
Step 1:
In order to determine how much larger Big town's population is to Small town's population is, we need to convert the exponentials into actual numbers.
Small town's population 
Big town's population 
Step 2:
In order to determine how much larger Big town's population is to Small town's population is, we divide Big town's population by Small town's population.

So Big town is 5.121 times larger than Small town.