# data[].attributes.body
-10 + 20 + -30 + 40 = 20

She makes $20

# data[].attributes.body
-10 +20= 10

10-30= -20

-20 +40=20

She is up $20.

# data[].attributes.body
start: -$10

+$20= $10

-$30 = -$20

-$20 + $40 = $20

Yaa made $20 after the buying/selling

# data[].attributes.body
-10

+20

-30

+40

_____

20

Yaa made $20

# data[].attributes.body
First transaction:

$20-$10=$10.00

Second Transaction:

$40-$30=$10.00

Total Profit:

$10+$10=$20.00

# data[].attributes.body
Yaa made $20!

she buys it for $10 --> -$10

she sells its for $20 --> +$10

she buys it back for $30 --> -$20

she sells its for $40 --> +$20

# data[].attributes.body
$10 -> $20 -> $30 -> $40

-10 + 20 - 30 +40 = $20

# data[].attributes.body
Yaa made $20

# data[].attributes.body
-$10 + $20= $10

$10-$30= -$20

-$20+ $40= $20

# data[].attributes.body
Number line helps me

# data[].attributes.body
-10

+ 20

-30

+ 40

= 20