12/15=8/(x-4)
12(x-4)=8(12)
12x-48=96
12x=144
x=12
The answer would be 7/c since you don’t have a value for c it would just become a fraction
Let the x ml of water be mixed with 237 ml of ammonia whose strength is 100%, in order to create a mixture of 75% strength.
The equation required to solve this will be:
237/(237+x)=75/100
solving for x we get:
237/(237+x)=3/4
237×4=3(237+x)
948=711+3x
3x+711=948
3x=948-711
3x=237
x=237/3
x=79 ml
therefore the amount of water to be added will be 79 ml
Answer:
$19.62
Step-by-step explanation:
To round 19.623 to the nearest cent consider the thousandths’ value of 19.623, which is 3 and less than 5. Therefore, the cents value of 19.623 remains 2.
$19.623 rounded to the nearest cent = $19.62
