Elizabeth got these grades on three tests: 72, 80 and 82. She had one more test to take. She wanted an average of 80 for the four tests. What score must she get on the fourth test?

82

Step-by-step explanation:

72+80+82= 234

234/3=78

78+82=160

154/2=80

she at least needs an 87 for her average to be an 80

Step-by-step explanation:

87+72+80+82=321

321/4= 80.25

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)