Answer:
The year 1996
With population of both 21600
Step-by-step explanation:
From 1990 to 2000 = 10 years
So city A grew from 12000 to 28000 that is city A had an increase of 16000 in 10 years.
While city b grew from 18000 to 24000 , that's an increase of 6000 in 10 years to.
For city A
10 years= 16000
1 year = 16000/10
1 year = 1600
For city B
10 years = 6000
1 year = 6000/10
1 year = 600
So we are to find what year the both cities had same population.
12000 + x1600 = y
18000 + x600 = y
X is the year difference
Y is the population at that year
Eliminating y gives
6000= x1000
X= 6
If x is 6
18000+3600= y
21600= y
So 6 years + 1990 = 1996
Answer:
21.7
Step-by-step explanation:
hope this helps!!!
Jeff received 280$ from his mother
Such questions are the simplest as it needs you to just write the conditions accordingly which then simplifies and provides you the answer.
This question can be solved using two tricks which are shown below:-
Trick 1 :
1 – 1/4 = 3/4 (used for the 1st 7 days)
1/4 – 410 (used for 8th and 9th days)
(3/4)/7 ——- (1/4 – 10)/2
(3/4) x (2/7) = 3/14 ——- (1/4 – 10)
1/4 – 3/14 = (7 – 6)/28 = 1/28 ——- 10
28/28 ——- 10 x 28 =$ 280
Trick 2 :
7 days ——- 3/4
1 day ——- 3/28
2 days ——- 6/28
6/28 ——- (1/4 – 10) = 7/28 – 410
1/28 ——- 10
28/28 ——- 10 x 28 = $280
Thus Jeff received 280$ from his mother.
Learn more about simple math here :
brainly.com/question/23678
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Taxi goes 261 km in 135 minutes.
We need speed in KM/HR
The distance is given in Km, but the time is NOT in hours. We convert minutes to hours as shown below:
![135\min \times\frac{1hr}{60\min }=\frac{135}{60}hr=2.25hr](https://tex.z-dn.net/?f=135%5Cmin%20%5Ctimes%5Cfrac%7B1hr%7D%7B60%5Cmin%20%7D%3D%5Cfrac%7B135%7D%7B60%7Dhr%3D2.25hr)
Now, we can use Distance Formula to solve for the speed:
D = RT
Where
D is distance [given as 261 km]
R is speed [what we want to find]
T is time [2.25 hours]
Thus,
![\begin{gathered} D=RT \\ 261=R(2.25) \\ R=\frac{261}{2.25} \\ R=116\frac{\operatorname{km}}{hr} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20D%3DRT%20%5C%5C%20261%3DR%282.25%29%20%5C%5C%20R%3D%5Cfrac%7B261%7D%7B2.25%7D%20%5C%5C%20R%3D116%5Cfrac%7B%5Coperatorname%7Bkm%7D%7D%7Bhr%7D%20%5Cend%7Bgathered%7D)
Average Speed = 116 kilometers per hour
Answer:
1 2/7 is bigger
Step-by-step explanation: