Meera observed how a certain substance cooled when placed in a freezer. Initially, the temperature of the substance was as shown by the thermometer below.
She kept it in a freezer at 12 noon. After 20 minutes the temperature of the substance dropped by 12 °C. After another 20 minutes, there was a FURTHER drop of 7 °C. What was the temperature of the substance at 12:40 PM?
1 - 4 °C.
2 -3 °C.
3 0 °C.
4 4 °C.
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the Google doc but Ami chaina the brainly to bhablm tui ki
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