Question

Edison

Edison's first light bulb stayed
lit for 40 hours. Today a
typical light bulb can stay lit
for 1,000 hours. How many of
Edison's light bulbs would burn
out before one of today's light
bulbs burns out?

Answer 1

25 of Edison's first light bulbs, which had a lifespan of 40 hours each, would burn out before one of today's typical light bulbs, which has a lifespan of 1,000 hours, burns out.

Step-by-step explanation:

The question is asking how many of Edison's first light bulbs, which stayed lit for 40 hours, would burn out before one of today's typical light bulbs, which can last for 1,000 hours, burns out. To find the answer, we simply divide the total hours a modern light bulb can last by the total number of hours Edison's first light bulb could last.

Calculation: 1,000 hours (today's bulb lifespan) ÷ 40 hours (Edison's bulb lifespan) = 25

So, 25 of Edison's first light bulbs would burn out before one of today's typical light bulbs.

Answer 2

25 light bulbs

Step-by-step explanation:

You just divide 1000 by 40