It is: 75.2/320 times 100 = 23.5%
It is: (320-32)/320 times 100 = 90% decrease
It is: 320/800 times 100 = 40%
3.2 times.
100% of 320 is 320 and 10% is a tenth of this, which is 32.
100 to 320
320.
first 400 is 4 times of 100 . so 80 percent of 400 is 4 times 80 which is 320. This can be done if the number is multipliable by 10.
145 times 320 is 46,400
320% = 320/100 = 16/5
It is: 160 times 2 = 320
100+320=420/2=210 - the mean is 210.