At Srinagar, starting at 9 a.m. on a certain day, snow began to fall at a rate of 1 1/4 inches every two hours until 3 p.m. If there was already 2 1/4 inches of snow on the ground at 9 a.m., how many inches of snow was on the ground at 3 p.m. that day?

ABC26GN1187 · Simplification

Subject: General Aptitude · Chapter: Simplification · Exam: · Marks: · Difficulty:

At Srinagar, starting at 9 a.m. on a certain day, snow began to fall at a rate of $1 \frac{1}{4}$ inches every two hours until 3 p.m. If there was already $2 \frac{1}{4}$ inches of snow on the ground at 9 a.m., how many inches of snow was on the ground at 3 p.m. that day?

(a)$3 \frac{3}{4}$

(b)6

(c)7

(d)$7 \frac{1}{2}$

Answer

Answer (as printed): B

Explanation

Thickness of snow at 3 p.m. $=\left[2 \frac{1}{4}+\left(3 \times 1 \frac{1}{4}\right)\right]$ inches $$\begin{aligned} & =\left(\frac{9}{4}+3 \times \frac{5}{4}\right) \text { inches } \\ & =\left(\frac{9}{4}+\frac{15}{4}\right) \text { inches } \\ & =\left(\frac{24}{4}\right) \text { inches }=6 \text { inches } . \end{aligned}$$

Explanation as extracted from the printed page; notation may be imperfect.

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