70% of a number is 56 ?? what is it ?

2009-07-05 6:12 am
answer in detail please

回答 (10)

2009-07-05 6:16 am
✔ 最佳答案
x = unknown number
.70x = 56 ---> solve for x (divide 56 by .70)
x = 80

Verify by multiplying 80 * .70 = 56
2009-07-05 6:41 am
= 56/(70%/100%)
= 56/([70/10]/[100/10])
= 56/(7/10)
= 56(10/7)
= 560/7 or 80

Answer: 80

Checking:
= 100%(56/80)
= 100%([56/8]/[80/8])
= 100%(7/10)
= 700/10% or 70%
2017-01-17 10:11 am
80 Of 70 Is What Number
2009-07-05 8:06 pm
70%<--------------->56
10%<---------------> 8
100%<-------------->80

Number is 80
2009-07-05 10:27 am
56 ÷ 70%
= 56 ÷ 70/100
= 56 x 100/70
= 56 x 10/7
= 560/7
= 80
2009-07-05 7:13 am
70% of x=56
7/10 0f x=56

7/10* 56/1= 392/10= 39.2
2009-07-05 6:29 am
70% of x = 56 (x- unknown number)
70/100 *x = 56.
x= 5600/70
x=80.


The answer is 80.
For checking if the answer is correct, do the following:
70% of 80 = 70/100*80
= 7/10*80
= 7*8
= 56.

Hope the working is detailed enough.
2009-07-05 6:24 am
56*100=5600
5600/70=80
80
2009-07-05 6:19 am
70% of 80 is 56.
just devide 56 by 70% or .70
then to check multiply 80x.70
2009-07-05 6:17 am
70% means 70 out of 100, which as a fraction is 70/100 = 7/10.

7/10 of a number in math means 7/10*x.

7/10*x = 56
x = 56*10/7
x = 80


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