Answer:
52/21
Step-by-step explanation:
3(7x) = 21x
21x = 52
x = 52/21
Answer:
This is an geometric sequence with a common ratio <em>r</em> of 1/2
Step-by-step explanation:
When you find out <em>r</em>, you realize the ratio between the numbers to be dividing by 2, or 1/2. Since it is <em>r</em> and not common difference <em>d</em>, it is an geometric sequence.
We have, 75% × x = 30
or, 75/100 × x = 30
Multiplying both sides by 100 and dividing both sides by 75,
we have x = 30 × 100/75
x = 40
Hope this helps!