Out of his total income Hamza spends 20% on the house rent and 70% of the rest on the household expenditure. If he saves Rs. 1800, what is his total income?

7,500

Step-by-step explanation:

Let's call the total income of Hamza by 'X'.

First he spends 20% of his income, so the remaining value is:

X - 20% of X = X - 0.2X = 0.8X

Then, he spends 70% of the rest, so he spends 70% of 0.8X:

0.8X - 70% of 0.8X = 0.8X - 0.7*0.8X = 0.8X - 0.56X = 0.24X

If this remaining is equal to 1800, we have that:

0.24X = 1800

X = 1800/0.24 = 7500

His total income is 7,500.

Hamza's total income is Rs. 7500

Step-by-step explanation:

Here we have 20% of income spent on rent

70% of the rest spent om household expenditure

We take the balance as Rs. 1800, therefore, we have

Therefore, we have 70% of (100 - 20) or 70% × 80% = 0.7×0.8 spent on household expenditure

Which is 0.56 or 56% spent on household expenditure

Therefore total percentage spent is 20+56 = 76%

balance percentage left is 24%

∴Amount saved is 24% which is Rs. 1800

Therefore we have 24% of Hamza's total income = Rs. 1800

Hamza's total income is therefore Rs. 1800 × 100/24 = Rs. 7500.

the population of other specie of birds will decline or other specie of birds will find some alternate source of food to survive.

explanation:

according to the competitive exclusion principle, which is also known as gause's law, two specie living in the same niche and feeding on the same resource cannot co-exist stably.

as we have well studied the theory of natural selection which states that only those organisms survive which have better tendency to compete for food and adapt to the environmental conditions.

coming towards the question, what wi ll happen when one species outcompetes the other for the small fish , the other specie will not get enough food and will start to die or decline in population. eventually either other specie needs to find another alternative food source for itself or migrate at some other location where there is less competition otherwise it will just not exist anymore at that niche.

hope it !

cant

step-by-step explanation: there is no picture