Question

Please help me with maths !!!

A fish was at the river-bed at a certain time. After 5 minutes, the water level of the river rose
up 2.4 cm and the water level of the river rose up again 3½cm after 4 minutes. The moment, the fish was at 14.6 cm from the river-bed and 162 cm below water level of the river.

Calculate the original height, in cm, of the water level of the river.​

Answer 1

• 170.7 cm

Explanation:

Let the original water level is x.

Use below equation to find its value:

• x + 2.4 + 3 1/2 = 162 + 14.6
• x + 2.4 + 3.5 = 176.6
• x + 5.9 = 176.6
• x = 176.6 - 5.9
• x = 170.7 cm