Maria studied the traffic trends in india. she found that the number of cars on the road increases by 10% each year. if there were 80 million cars in year 1 of her study, how many more cars were on the road in year 3 compared to year 2?
8,000,000
8,800,000
88,000,000
96,800,000

Option B

ANSWER:

8800000 more cars were on the road in year 3 compared to year 2

SOLUTION:

Given, Maria studied the traffic trends in India.  

She found that the number of cars on the road increases by 10% each year.  

If there were 80 million cars in year 1 of her study, we need to find how many more cars were on road in year 3 compared to 2.

Cars on road in 1st year = 80,000,000

Now, according to maria study,

Cars on road in 2nd year = cars on road in 1st year + 10% x cars on road in 1st year

= 80000000 + 10% x 80000000

= 80000000 + 8000000

= 88000000

Hence cars on road in 2nd year = 88000000

Now, Cars on road in 3rd year = cars on road in 2nd year + 10% x cars on road in 2nd year

= 88000000 + 10% x 88000000

= 88000000 + 8800000

= 96800000

Hence cars on road in 3rd year = 96800000

Number of excess cars in 3rd compared to 2nd = cars on road in 3rd year - cars on road in 2nd year

= 96800000 – 88000000

= 8800000

So, there are 8800000 more cars in third year that second year.

Hence, the second option, 8800000 is right answer.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

ιт ιѕ:

125.28

нσρє ι ¢συℓρ нєℓρ