In Kashmir- temperature decreases by 2-3- C - hr and it starts to freeze below 0- C- If the temperature is 6-9- C- Then how many hours does it take to start freezing-A- 3B- 4C- 2D- 1

The correct option is A 3Temperature decreases by 2.3^o C/hr. Present temperature is given as nbsp;6.9^oC. In order to freeze, the temperature should decreas ...

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Standard VI

Mathematics

Division of Decimals

In Kashmir, t...

Question

In Kashmir, temperature decreases by ${2.3}^{o} C / h r$ and it starts to freeze below $0^{o} C$ . If the temperature is ${6.9}^{o} C$ . Then how many hours does it take to start freezing?

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Solution

The correct option is C 3
Temperature decreases by ${2.3}^{o} C / h r$ .
Present temperature is given as ${6.9}^{o} C$ .
In order to freeze, the temperature should decrease by ${6.9}^{o} C$ and become $0^{o} C$ .
Time taken = $6.9 \div 2.3 = 3 h r s$

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In Kashmir, temperature decreases by 2.3oC/hr and it starts to freeze below 0oC. If the temperature is 6.9oC. Then how many hours does it take to start freezing?

The correct option is C 3Temperature decreases by 2.3oC/hr. Present temperature is given as 6.9oC. In order to freeze, the temperature should decrease by 6.9oC and become 0oC. Time taken = 6.9÷2.3=3hrs

In Kashmir, temperature decreases by ${2.3}^{o} C / h r$ and it starts to freeze below $0^{o} C$ . If the temperature is ${6.9}^{o} C$ . Then how many hours does it take to start freezing?

The correct option is C 3
Temperature decreases by ${2.3}^{o} C / h r$ .
Present temperature is given as ${6.9}^{o} C$ .
In order to freeze, the temperature should decrease by ${6.9}^{o} C$ and become $0^{o} C$ .
Time taken = $6.9 \div 2.3 = 3 h r s$