From 1980 through 1990, the population of Country X increased by 100 percent. From 1990 to 2000, The population increased by 50 percent. What was the combined increase for the period 1980-2000

A. 150%
B. 166 2/3%
C.175%
D.200%

Would some one please break this down for me cause I thought it was A but the book has D.

Question

From 1980 through 1990, the population of Country X increased by 100 percent. From 1990 to 2000, The  population increased by 50 percent. What was the combined increase for the period 1980-2000

A. 150%
B. 166 2/3%
C.175%
D.200%

Would some one please break this down for me cause I thought it was A but the book has D.

amistre64 · Answer

50% is from the value in 1990, not the value in 1980

amistre64 · Answer

lets try it with numbers to see:

5 increased by 100% = 5+5 = 10

10 increased by 50% = 10+5 = 15

5 +100% + 100% = 15

anonymous · Answer

so then it would be 2300 percent oh ok now i see