Explanation

Explanation

= 30/ 100 (3300)

= 990

Explanation

To solve the problem, let us assume the total number of boys is $B$ and the total number of girls is $G$. According to the problem:

• $frac{1}{3}$ of the boys are present, so the number of boys present is $frac{B}{3}$
  
• $frac{1}{2}$ of the girls are present, so the number of girls present is $frac{G}{2}$.

The total number of students present is given as:

B​/3+G​/2=Total students present.

Step 1: Check if additional information is provided

• The problem does not give the total number of boys ($B$) or girls ($G$), nor a relationship between $B$ and $G$.
• Without this, we cannot calculate the total number of students present.

Step 2: Conclusion

Since no additional information about $B$ and $G$ is given, the correct answer is:

(D) Data inadequate.

Explanation

1. Multiply the numerators:

   $$2\times 4=8$$

2. Multiply the denominators:

   $$9\times 9=81$$

2/9​×4​/9=8/18​

Explanation

2x + 7 = 19

2x = 19 - 7

2x = 12

x = 12/2

x = 6

Explanation

The correct value of 22/7 is approximately 3.14.

Explanation

294 × 6 = 1764 = 42²

Explanation

1 inch = 60

2.5 inches = 2.5 x 60 = 150

Explanation

= -3^3

= -3 × -3 × -3

= -27

Explanation

Initially, the milkman has 10 liters of milk and adds 10 liters of water, making the total solution 20 liters (10 milk + 10 water).

The ratio of milk to water is 1:1, so the concentration of milk is 50% (10 liters milk / 20 liters total).

The son takes 15 liters of this solution, which contains 50% milk, so he takes 7.5 liters of milk (15 liters x 0.5) and 7.5 liters of water.

The son then adds 5 liters of water to the 15 liters he took, making the total solution 20 liters again (7.5 milk + 7.5 water + 5 water).

Now, the total water in the solution is 7.5 liters (initial water) + 5 liters (added water) = 12.5 liters.

So, the amount of water in the milk is 12.5 liters.