Company workers decided to raise Rs. 3 lakhs by equal contribution from each. Had they contributed Rs. 50 each extra, the contribution would have been Rs. 3.25 lakhs. How many workers were they?

Answer: Option D

Answer: Option B

Explanation:

$$\begin{aligned} = 16-[5-(6+2(7-8+5))] \end{aligned}$$
(Please check due to overline, sign has been changed)
$$\begin{aligned} = 16-[5-(6+2 \times 4))] \end{aligned}$$
$$\begin{aligned} = 16-[-9] = 16 + 9 = 25 \end{aligned}$$

Answer: Option D

Explanation:

We know
$$\begin{aligned} 2ab = (a^2 + b^2) - (a - b)^2 \end{aligned}$$

$$\begin{aligned} 2pq = 29 - 9 = 20 \end{aligned}$$

$$\begin{aligned} =>pq = 10 \end{aligned}$$

Answer: Option A

Explanation:

By taking LCM we get
= $$\begin{aligned} \frac{28+14+7+4+2+1}{28} = \frac{56}{28} = 2\end{aligned}$$

Answer: Option A

Explanation:

$$\begin{aligned} => \frac{4}{7}x + \frac{4}{7} = \frac{15}{4} \end{aligned}$$
$$\begin{aligned} = \frac{4}{7}x = \frac{15}{4} - \frac{4}{7} \end{aligned}$$
$$\begin{aligned} = \frac{4}{7}x = \frac{7}{14} \end{aligned}$$
$$\begin{aligned} = x = \frac{1}{2}\times \frac{7}{4} = \frac{7}{8} \end{aligned}$$