The image shows several arithmetic problems. We are asked to solve the following four problems: Problem 22: $1320 \div 12 = ?$ Problem 23: $71 \times 46 = ?$ Problem 24: $\frac{4}{7} + \frac{5}{7} = ?$ Problem 25: $20\%$ of $1800 = ?$ Problem 26: $15 \times 6.1 = ?$

1. Problem Description

The image shows several arithmetic problems. We are asked to solve the following four problems:

Problem 22: $1320 \div 12 = ?$

Problem 23: $71 \times 46 = ?$

Problem 24: $\frac{4}{7} + \frac{5}{7} = ?$

Problem 25: $20\%$ of $1800 = ?$

Problem 26: $15 \times 6.1 = ?$

2. Solution Steps

Problem 22: $1320 \div 12$

We can perform long division:

$1320 \div 12 = 110$

Problem 23: $71 \times 46$

We multiply the numbers using the standard multiplication method:

$71 \times 6 = 426$

$71 \times 40 = 2840$

$426 + 2840 = 3266$

Problem 24: $\frac{4}{7} + \frac{5}{7}$

Since the fractions have the same denominator, we can add the numerators directly:

$\frac{4}{7} + \frac{5}{7} = \frac{4+5}{7} = \frac{9}{7}$

Problem 25: $20\%$ of $1800$

$20\% = \frac{20}{100} = \frac{1}{5}$

$\frac{1}{5} \times 1800 = \frac{1800}{5} = 360$

Alternatively, we can calculate $1\%$ of $1800$ which is $18$. Then, $20\%$ would be $20 \times 18 = 360$.

Problem 26: $15 \times 6.1$

$15 \times 6.1 = 15 \times (6 + 0.1) = (15 \times 6) + (15 \times 0.1) = 90 + 1.5 = 91.5$

Alternatively, we can perform the multiplication directly as $15 \times 61 = 915$. Since we are multiplying by $6.1$, we need to divide by 10, so we have $91.5$.

3. Final Answer

Problem 22: 110

Problem 23: 3266

Problem 24: $\frac{9}{7}$

Problem 25: 360

Problem 26: 91.5