10 students averaged 80, so the sum of their scores was (10 x 80) = 800
20 students averaged 89, so the sum of their scores was (20 x 89) = 1,780
All together, the sum of all 30 scores was (800 + 1,780) = 2,580
30 students totaled 2,580, so their average was (2,580 / 30) = <em> 86</em> .
Answer:
Point C is located on the x-axis.
Step-by-step explanation:
edge 2020
Answer:
300
Step-by-step explanation:
24% × x = 72
or, 24
/100
× x = 72
we have x = 72 × 100
/24
x = 300
Hope it helps
