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slavikrds [6]
3 years ago
11

After 25 years,Hema's age will become four times that of her present age.find Hema's present age?​

Mathematics
2 answers:
Sophie [7]3 years ago
6 0
Let Hema's present age be x years.
After 15 years,her age will be (x+15) year.
according to the question ,
4x=x+15
4x−x=15
3x=15
x=5
Hence,Hema's present age is 5 years.
WINSTONCH [101]3 years ago
3 0

Answer:

Step-by-step explanation:

We can make this into the equation 25 + x = 4x

we isolate the equation by subtracting x from 4x. (3x)

Therefore, 25 = 3x. Therefore, Hema is 8.

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Median won't change, however Mean will fall by 180.

<h3>What do mean and median?</h3>

By summing all the numbers in a data collection and dividing by the total number of values in the set, one may get the mean (average) of the data set. When a data collection is sorted from least to largest, the median represents the midpoint value.

African elephants total 555 in number.

Elephants had a 3800 kg average mass.

Elephants had a 3600 kg median mass.

Lola, the elephant that was the smallest, weighed 2700 kg.

Later, Lola became really ill and lost a lot of weight, reaching a mass of 1800 kg.

What effect will Lola's weight loss have on the mean and median as well as Currently, the median is 3600 and the lowest is 2700.

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No change in Median

The mean mass of the elephants was  3800 kg

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2700 kg becomes 1800 kg

Hence new total mass = 19000 - 2700 + 1800 = 181000 kg

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1 year ago
I need help with algebra
rosijanka [135]

Answer:

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2 years ago
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