Major hint:
multiply each term by 20 , the LCD
Solve for n
N/5 + n/4= 1/2
2 answers
N/5 + n/4= 1/2
First, treat n/5 and n/4 as you would fractions. If you don't know how to add fractions with unlike denominators, you are out of luck here.
n x 4 / 5 x 4 + n x 5 / 4 x 5
4n / 20 + 5n /20 = 9n/20
9n/20 = 1/2 Solve for n
20 * 9n/20 = 1/2* 20
9 n = 10
9 9
n = 10/9 or 1.1
First, treat n/5 and n/4 as you would fractions. If you don't know how to add fractions with unlike denominators, you are out of luck here.
n x 4 / 5 x 4 + n x 5 / 4 x 5
4n / 20 + 5n /20 = 9n/20
9n/20 = 1/2 Solve for n
20 * 9n/20 = 1/2* 20
9 n = 10
9 9
n = 10/9 or 1.1
1 answer