Question Detail

What decimal of an hour is a second

.0028
.0027
.0026
.0025

Answer: Option B

Explanation:

1/(60*60) = 1/3600 = .0027

1. Evaluate 2.5 / .0005

5000
500
50000
50

Answer: Option A

Explanation:

2.5 * 10000 / 5 = 25000/5 = 5000

2. Which is smallest

13/16
15/19
17/21
7/8

Answer: Option B

3. Evaluate
6202.5 + 620.25 + 62.025 + 6.2025 + .62025

6791.59775
6891.59775
6891.59675
5891.59775

Answer: Option B

Explanation:

Just we need to take care to put decimal under decimal, rest add in a simple way

4. 1/0.04 is equal to

25.5
2.5
25
.25

Answer: Option C

Explanation:

1/0.04 = (1 * 100)/4 = 100/4 = 25

5. \begin{aligned}
(0.34\overline{67} + 0.13\overline{33}) = ?
\end{aligned}

\begin{aligned} 0.048\overline{01} \end{aligned}
\begin{aligned} 4.8\overline{01} \end{aligned}
\begin{aligned} 48.\overline{01} \end{aligned}
\begin{aligned} 0.48\overline{01} \end{aligned}

Answer: Option D

Explanation:

\begin{aligned}
(0.34\overline{67} + 0.13\overline{33})\end{aligned}
\begin{aligned} =
\frac{3467-34}{9900} + \frac{1333-13}{9900}
\end{aligned}
\begin{aligned}
= \frac{3433 + 1320}{9900}
= \frac{4753}{9900}
\end{aligned}
\begin{aligned}
= \frac{4801 - 48}{9900}
= 0.48\overline{01}
\end{aligned}