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Problem 216

Algebra Difficulty 1.8 Find the answer CEMC Pascal

Jitka hiked a trail. After hiking 60% of the length of the trail, she had 8 km left to go. What is the length of the trail?

Your answer

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

Official solution

After Jitka hiked 60% of the trail, 40% of the trail was left, which corresponds to 8 km. This means that 10% of the trail corresponds to 2 km. Therefore, the total length of the trail is $10 \times 2 = 20 \text{ km}$ .

Source: Omni-MATH, licensed Apache-2.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.