The students in one classroom sold tickets to the talent show They sold 200% of the amount of tickets that they sold last year. If they
sold 40 tickets this year, how many did they sell last year?

X= 80

Step-by-step explanation:

200% = X

100%  = 40

40 * 200% = 100% * X

8000 = 100 * X

8000/100 = 100*X / 100

X = 80

for any of you who need the translation here it is

step-by-step explanation:

find the angular size of the equatorial radius of the earth, if the horizontal parallax of the sun

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.