3+8+10+14+11= 46
46/(how many trees) 5= 9.2
9.2 years is your answer.

Step-by-step explanation:


Multiply Equation no (1) with 2 and Equation no (2) with 7.







Substitute the value of "y" in Equation no (1)







Angles are 18° and 72°
Step-by-step explanation:
- Step 1: Find the two complementary angles in the ratio 1:4. Let the angles be 1x and 4x.
x + 4x = 90° (∵ they are complementary)
5x = 90
∴ x = 90/5 = 18
⇒ Angles are 18° and 4x = 72°