30
60
If you mean: 40, 50 and 60 then it is 10
40% of 60 = 40/100 x 60 = 4/10 x 60 = 240/10 = 24
20
Mean of 10 numbers is 58 so sum of 10 numbers is 580. One of them is 40 so the sum of the remaining nine is 540. So mean of the remaining nine is (their sum)/9 = 540/9 = 60 don't know if I'm understanding right but isn't it roughly 3.60
LCM(30, 40, 60) = 120 GCF(30, 40, 60) = 10
40% of 60 is calculated by considering 40%=40/100 Then (40*60)/100= (4*10 * 6*10)/(10*10)... since 10/10=1, 4*6=24 So you have 24 dollars off. 60-24= $36 This method allows for doing the calculation quickly on paper or in your head.
40% of 60 is calculated by considering 40%=40/100 Then (40*60)/100= (4*10 * 6*10)/(10*10)... since 10/10=1, 4*6=24 So you have 24 dollars off. 60-24= $36 This method allows for doing the calculation quickly on paper or in your head.
20,40,60 Proof (20)(20/4=5)(20/5=4)(20/10=2) And (40)(40/4=10)(40/5=8)(40/10=4) And (60)(60/4=15)(60/5=12)(60/10=6)
50
The GCF of 8, 40, and 60 is 4.