Answer:
40%
Step-by-step explanation:
Let x = numerator
Let y = denominator

Decreased by 30% = 100% - 30% = 70% = 70/100 = 0.7
Decreased by 50% = 100% - 50% = 50% = 50/100 = 0.5



1.4 as a percentage = 1.4 x 100 = 140%
Therefore, the percentage increase is 140 - 100 = 40%
Answer:
3,4,5,6,7,8
Step-by-step explanation:
sum of 2 with other possible numbers:
2+1, 2+2, 2+3, 2+4, 2+5, 2+6
3, 4, 5, 6, 7, 8
This is a direct variation, since the cost and the number of articles purchases both go up.