3. The total cost of 5 cups and 8 bottles is Rs 92 and the total cost of 5 bottles and 8 cups is Rs 77, then the cost of 3 cups and 3 bottles is? od 057
Answers
Answer:
Destroys life in the water based ecosystem which is polluted which in turn disrupts natural food chain. Aquatic life is destroyed due to the non-biodegradable pesticides and chemicals. Water pollution affects the microbial population. There is a steep increase in the BOD levels of water.
Step-by-step explanation:
sorry for spamming your question.
please drop 30 thanks I will return you back.
Answer:
The answer will be ₹39
Step-by-step explanation:
Let the value of 1 cup be ₹x and 1 bottle be ₹y,
According to question,
value of 5 cups{₹ 5x} and 8 bottles{₹ 8y} is ₹92 ,and,
value of 8 cups{₹ 8x} and 5 bottles{₹ 5y} id ₹77,
Forming the simultaneous equations, we get ,
5x + 8y= 92
8x + 5y= 77
------------------
(Multiplying in equation 1 with 8 and in equation. 2 with 5)
40x +64y=736
(-) 40x +25y=385
---------------------(On subtraction)
39y=351 ,or,
y=9
Hence value of 1 bottle is ₹9 and putting this value in any of the above equation we get value of x as ,
5x + (8×9)=92
5x=92-72
5x=20
x=4 , hence value of 1 cup is ₹4 so value of 3 cups and 3 bottles will be 3x + 3y= (3×4)+(3×9) = 12+ 27= ₹39
*