3 is the hcf
21 is 30 % of the number which is found to be seventy.
21 is 30% of 70
Every rational number "goes into" every other rational number. In this case, the quotient is 0.7 .
21 is 70% of 30.
1 is the only common factor of 30 and 73.
The next number in the sequence 3-15-6-30-21 is -207.
To find the percent that a number, x, is out of another number, y, divide x by y and multiply by 100. So (21/30)*100 = 70, which means that 21 is 70% of 30.
3
75/30 = 21/2
210
30% is 0.30 so, 0.30 x 70 = 2100 move the decimal to the left 2 times and get 21 and 21 is your answer!
21 and any multiple of 21.