The temperature decrease 1.3 per week. The temperature was 53 degrees for weeks.

What will the temperature be in 12 weeks?

37.4 degrees

because 1.3 times 12 is 15.6 and subtract that from 53

The temperature will be 37.4 degrees in twelve weeks.

We can find this by first multiplying 1.3 by 12 to find out the total decrease of temperature in 12 weeks. After the twelve weeks the temperature will decrease by 15.6 degrees.

Now we subtract the overall decrease by the starting temperature.

53-15.6 = 37.4