400/160=2.5 This is finding the necessary multiplier
2.5*5=x I used 2.5 and multiplied it by 5
x=12.5 minutes This is the answer
It would take 12 minutes and 30 seconds
Answer:
Step-by-step explanation:
The easiest and most proper way to approach this task is to combine like terms inside parentheses: (24x + 7 – 12x) => (12x + 7).
Then (1/4)(24x + 7 – 12x) = (1/4)(12x + 7). This is an acceptable answer. There is the option of carrying out the multiplication, which results in
3x + 7/4, which is another acceptable answer.
So lets just assume first that there are a total of 2700 species of snakes all in all. Out of the 2700 snakes, 600 are known to be venomous. So first of all, let's get the number of the non venomous ones. Subtract 2700 and 600 and you will end up with 2100. So there are a total of 2100 non venomous snakes. So the fraction of the non venomous snakes will be 2100/2700. In its simplified form it is 7/9. In its decimal form (just divide it), you will get an answer of 0.7777.......
