67 ÷ 10 x 4 = 26.8 hours for her to eat 67 cookies
$15 + $32.50 + 8% = $51.30
15 + 32.50 = 47.50
8% × 47.50 = 3.80
47.50 + 3.80 = 51.30
The mass of the rock in kg is 90,000 kg
Step-by-step explanation:
-3+m/9=10
m/9=10+3
m/9=13
m=13×9
m=117
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