Respuesta :
Answer:
#18 is $160
Step-by-step explanation:
#18
=500 x 3 +500
=1500+500
=2000
=200/5 x 4
=40 x 4
= $160
Answer:
1) She earn $1600 by selling her 2000 muffins on both days.
2) The amount of money boys have altogether in the beginning is $180.
Step-by-step explanation:
1) Given : Mrs. Rothberg baked 500 muffins on Saturday and 3 times as many muffins on Sunday. If the sold 5 muffins for $4.
To find : How much would she earn by selling her muffins on both days?
Solution :
On Saturday she manufacture = 500
On Sunday she manufacture = [tex]3(500)=1500[/tex]
Total manufacture on Saturday and Sunday is [tex]500+1500=2000[/tex]
She sold 5 muffins for $4.
She sold 1 muffin for [tex]\frac{4}{5}[/tex].
She sold 2000 muffin for [tex]\frac{4}{5}\times 2000[/tex].
She sold 2000 muffin for $1600.
Therefore, she earn $1600 by selling her 2000 muffins on both days.
2) Given : Jack had $80 more than Eric. When Jack spent $30, he found that the amount of money he had left was twice as much as what Eric had.
To find : How much did the boys have altogether in the beginning?
Solution :
Let amount of money Jack has 'x'.
The amount of money Eric has 'y'.
According to question,
Jack had $80 more than Eric.
[tex]x = y + 80[/tex] .....(1)
When Jack spent $30, he found that the amount of money he had left was twice as much as what Eric had.
[tex]x - 30 = 2y[/tex] .....(2)
Substitute the value of x in (2),
[tex]y+80 - 30 = 2y[/tex]
[tex]y=50[/tex]
Substitute in equation (1),
[tex]x =50+ 80[/tex]
[tex]x=130[/tex]
The amount of money the boys have altogether in the beginning is
[tex]\$130 + \$50 = \$180[/tex]
Therefore, the amount of money boys have altogether in the beginning is $180.
