Answer:
D.
Step-by-step explanation:
The formula for this conversion is:
Substitute the values you currently have.
Since we know that
a = 5
x = 7
n = 3
Fill the square root with this.
each shirt is $4.20
42/10 = 4.2
28 kg + 750 g = 28*1000 + 750
28000 + 750
= 28750 g
Number of sack = Total quantity of sugar ÷ quantity of sugar in a sack
= 28750 ÷ 500
= 57 sacks