<span> ϕ = (1+√5)/2 ≈ 1.618
10.4 * ϕ ≈ 16.8
10.4 / ϕ ≈ 6.4
Answer: b </span>
The answer would be -0.66
Step-by-step explanation:
The answer is attached in this photo
Rs.1680
Liter. Rs
————-|————-
25 | 1400
:5( | ):5
5 | 280
x6( | )x6
30 | 1680
The correct answer is A. 1