It is: (72+108)/2 = 90
90% of 72 = 90% * 72 = 0.9 * 72 = 64.8
It is: 72 minus 16 = 56
There is a very easy way to do this type of thing:Subtract the difference, then half the answer, this gives the smaller number. Add back the difference to get the larger number.In this case 90 - 18 = 72; 72/2 = 36 then 36 + 18 = 54.
72 and 90
It is: (72+108)/2 = 90
72-(-15)=72+15=87
128 - 72 = 56
90% of 72 = 90% * 72 = 0.9 * 72 = 64.8
90
72 - 59 = 13
Suppose a 90 dollar item was on sale for 72 dollars. What is the percentage change? Find the difference. 90 - 72 = 18. 18 is 1/5 of 90 or 20%. The percentage of decrease is 20%. Since we subtracted 20% from the original number, the remainder must be 80%. 72 is 80% of 90. (90 x 0.80 = 72)
(-6) x (-3) = 18 (-10) x (-9) = 90 18 - 90 = -72
90-18 = 72
60, 72, 84.
It is: 72 minus 16 = 56
90 - 72 = 18