Answer:
41 times.
Step-by-step explanation:
We have,
A delivery truck measures 11 feet by 8 feet and is 6 feet tall.
⇒ Volume of the truck = 11 × 8 × 6 = 528 ft³,
Now, the volume of planting soil that fits in the wheelbarrow measures 2 feet by 3 feet by 1.5 feet.
⇒ Volume of planting soil = 2 × 3 × 1.5 = 9 ft³,
Let n be the number of times johnny needs to use the wheelbarrow until the truck is 70% full,
⇒ Volume of planting soil × n = 70 % of the volume of the truck
[tex]\implies 9 \times n = 70\% \times 528[/tex]
[tex]\implies 9n=\frac{70\times 528}{100}[/tex]
[tex]n = \frac{36960}{900}=41.0667\approx 41[/tex]
Hence, the minimum number of times johnny needs to use the wheelbarrow until the truck is 70% full is 41.
