The Learning EaSEL

There are two positive integers, one is 3(5+a) and the other one is 8b. Ratio of their sum to their difference is 5:1. Find the minimum possible value of a+2b. It is given that 8b is greater than 3(5+a) and both a&b are positive integers.

[18*4÷2{3(2+1)}]=?

Statements:
Some A are B.
All C are A. Only few D are A. Conclusions: 1) Only few D are C. 2) No C are D.

Q1: HCF of any two consecutive even composite numbers

Q2: HCF of any three consecutive positive integers

Statements:
20% A are B.
100% B are C. 100% C are D. Conclusions: 1) 100% A are D. 2) Only few A are not D

A:B=3:4, what can be the possible ratio of the same if X is added to both A & B. Given that X is a positive integer

A≤B=C≠D=E≥F
If A=G and G≠F are true then which of the following is definitely false