1. 86 is 45% of what number? a. 86 = 0.45n * b. n = 0.45 x 86 c. 0.45 = n x 86 d. 86 = 45n 2. what percent of 26 is 4? a. 0.26 = n x 4 b. n = 0.26 x 4 c. 4 = n x 26 * d. 26 = 4n 3. what percent of 250 is 70? a. 3.6% b. 18% c. 28% * d. 175% 4. 65% of 80 is what number? a. 25 b. 52 * c. 81.3 d. 123 5. 48 is 30% of what number? a. 14.4 b. 18 c. 62.5 d. 160 *

1. let the required no. be x then according to question
(45/100)*x = 86
x = 86*(100/45)
x = 8600/45 = 191.1
as according to ur options (a) will lead to correct answer .

2. for calculating what percentage of 26 is 4 follow these steps
(4/26)*100 = 400/26 = 15.38%

as according to options u have given none is correct. :(

3. for calculating what percentage of 250 is 70 follow these steps
(70/250)*100= 700/25 = 28%

as according to ur options (c) is correct.

4. for calculating that what no. is 65% of 80 follow these steps
(65/100)*80= 520/10= 52

therefore (b) is correct.

5. for calculating 48 is 30% of what no. follow these steps
let the no. be x then according to question
(30/100)*x = 48
x = 48*(100/30)
x = 480/3
x = 120

now here I guess either ur options are wrong or u have misplaced the sign of percentage ...bcoz of ur question was 48 % of 30 is what no. then ur answer must be like (48/100)*30 = 144/10 = 14.4
which is option (a)so either ur question is wrong or ur options are wrong I have explained both ways rest is urs work. ;)

hope it helped

Number nine is f(x)= 40x : ) hoped i ya