Question 1094378
Let x be the speed of the truck:
2x+2x+2(20) = 220
4x + 40 = 220
4x = 180
x = 45 this is the speed of the truck
The speed of the car: 45+20 = 65
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Check:
car × 2 hours + truck × 2 hours = 220
= (65 × 2) + (45 × 2) = 220
= 130 + 90 = 220 Correct