Let the first digit of the 2-digit number be x and the second digit be y.
Then the ratio (x/y) equals (1/2). Write a formula for y in terms of x.
The tens digit is 2 more than the units digit. Using the letters x and y, write out the proper equation.
Now solve your two equations simultaneously for x and y.
The base is 30.
Hopefully I got this correct, not 100%
Answer:
17 = of 68
42 = of 70
Step-by-step explanation:
Well simply:
68×1÷4=
68÷4=
17
17 is of 68.
70×3÷5=
210÷5=
42
42 is of 70.