Question : Study the given graph and answer the question that follows.

The ratio of the total production of cement by Company A in 2016 and Company C in 2018 to the total production of cement by Company B in 2017 and 2019 is:

Option 1: 9 : 8

Option 2: 7 : 6

Option 3: 8 : 7

Option 4: 10 : 9

Question : Study the given graph and answer the question that follows.
The total production of computers in 2013, 2015, and 2018 is x% of the total exports of computers by the company during the six years. The value of x is:

Option 1: $46 \frac{1}{3}$

Option 2: $52 \frac{1}{3}$

Option 3: $53 \frac{1}{3}$

Option 4: $49 \frac{2}{3}$

Question : Study the given graph and answer the question that follows.
In 2020, the production of cement by company C increased by the same percentage as in 2019, over its previous year. The production (in million tonnes) of cement by company C in 2020 (correct to one decimal place) was:

Option 1: 454.6

Option 2: 455.8

Option 3: 457.1

Option 4: 452.4

Question : Simplify the following.
$\frac{3 a+b}{2}-\frac{a-3 b}{3}+2b$

Option 1: $\frac{5(a+3b)}{6}$

Option 2: $\frac{7a+3b}{6}$

Option 3: $\frac{7(a+3b)}{6}$

Option 4: $\frac{a+3b}{6}$

Question : The HCF of $\frac{1}{2}, \frac{3}{4}, \frac{5}{6},$ and $\frac{7}{8}$ is:

Option 1: $\frac{105}{2}$

Option 2: $\frac{1}{24}$

Option 3: $\frac{7}{24}$

Option 4: $\frac{1}{48}$