Question

An ice-cream is removed from the fridge at - 17 degrees * c ,if its temperature increases by 2°c every 5 minutes what will be its temperature after 30 minutes?
Integers question
class 7
Maths ​

Answer 1

Given:-

• Current temperature of ice cream = -7 °C

• Rate of increase in temperature every 5min=2°C

To Find:-

• Temperature after 30 minutes ?

Solution:-

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀According to the Question

It is given that the Ice cream is removed from the fridge when the temperature was -17 °C . We have to calculate the temperature of ice cream after 30 min . So , Let's begin

$:\implies$ Increase in Temperature°C = 30×2/5

$:\implies$ Increase in Temperature°C = 6 ×2

$:\implies$ Increase in Temperature °C = 12°C

Now, the temperature of the ice cream increase by 12°C after 30 minutes .

So the temperature of Ice- cream after 30 minutes = Initial Temperature + Increase in Temperature

$:\implies$ Temperature of Ice- cream after 30 min= -17°C + 12°C

$:\implies$ Temperature of Ice- cream after 30 min = -5°Ccm

• Hence, the temperature of ice cream after 30 minutes will be -5 °C.

Answer 2

Given :-

An  ice-cream is removed from the fridge at - 17 degrees * c ,if its temperature increases by 2°c every 5 minutes

To Find :-

Temperature after 30 minutes

Solution :-

So,

To make the time 30 minute we have to multiply 5 by 6. Then we will multiply 2 by 6 which will be 12° C

Temperature of ice cream = 12 + (-17)

Temperature of ice cream = 12 - 17

Temperature of ice cream = -5 ° C