Answer:
2(50) + 4(100) + 20 = total
Step-by-step explanation:
D 90
x/4 ≥ 20
Multiply each side by 4
4*x/4 ≥ 20*4
x ≥ 80
The only number greater than or equal to 80 is 90
3/4 x 20
3/4 x 20/1
3 x 20 = 60
4 x 1 = 4
60 / 4 = 15