What is the final amount if 1218 is increased by 10% followed by a 16% decrease Give your answer rounded to 2 DP.
And:1125.43

1125.43

Step-by-step explanation:

you multiply the percentages by the number and you round to get 1125.43

x = 3

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

45x is an exterior angle of the triangle, hence

45x = 25x + 57 + x

45x = 26x + 57 ( subtract 26x from both sides )

19x = 57 ( divide both sides by 19 )

x = 3