# Ex.1.1 Q3 Integers - NCERT Maths Class 7

## Question

In Srinagar, temperature was \(–5^\circ \rm C\) on Monday and then it was dropped \(2^\circ \rm C\) on Tuesday. What was the temperature of Srinagar on Tuesday? On Wednesday it rose up by \(4^\circ \rm C.\) What was the temperature on this day?

## Text Solution

**What is known?**

Different days and their respective temperatures.

**What is the unknown?**

The temperature of Srinagar on Tuesday and Wednesday.

**Reasoning:**

**Steps:**

Temperature of Srinagar on Monday\(= \,–5^\circ \rm C\)

On Tuesday it was dropped by \(2^\circ \rm C\)

Temperature on Tuesday

\[\begin{align}&= -5^\circ \rm C - 2^\circ \rm C \\ &={{\rm -7^\circ C}}\end{align}\]

On Wednesday it rose up by \(4^\circ \rm C\)

Temperature on Wednesday

\[\begin{align}&= -7^\circ \rm C\,{\rm{ + }}\,{\rm{4^\circ C}}\\&={\rm{ -3^\circ C}}\end{align}\]

Thus, temperature on Tuesday was \(–7^\circ \rm C\) and on Wednesday was \(–3^\circ \rm C.\)