he

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

פּוֹפּוּלָרִי Word Problems >

In an experiment, the population of bacteria is increasing at the rate of 100% every minute. The population is currently at 50 million. How much was the population of bacteria minute ago?

פתרון

I n an e x p er im e n t, t h e p o p u l a t i o n o f ba c t er ia i s in cre a s in g a t t h e r a t e o f 100% e v ery min u t e . T h e p o p u l a t i o n i s c u rre n tl y a t 50 mi ll i o n . Ho w m u c h w a s t h e p o p u l a t i o n o f ba c t er ia min u t e a g o ?

פתרון

Amount before addition : 25

צעדי פתרון

Translate the problem into an equation:

50 = x + 1 \cdot x

50 = x + 1 \cdot x : x = 25

Amount before addition : 25

דוגמאות פופולריות

th sum of two numbers is 54 and their difference is 20. find the numbers 13 less than a number is 4 more than a different number.three times the sum of a number and 4 is 108 a coin is tossed 6times what is the probability of getting4 or more heads seven times a certain number is 5 more than twice its square. find the number