In one hour, Addison mountain's temperature will decrease to 3/4 of its temperature. If the current temperature of the mountain is 84 degrees, what will the temperature decrease by?

In one hour, Addison mountain's temperature will decrease to 3/4 of its temperature. If the current temperature of the mountain is 84 degrees, what will the temperature decrease by?

How much will the temperature decrease by? ** In one hour, Addison mountain's temperature will decrease to 3/4 of the temperature it is now, meaning the temperature will decrease to 3/4*84=

<<3/4*84=63>>63 degrees. How much will the temperature decrease by? ** The temperature decrease will be 84-63=<<84-63=21>>21 degrees #### 21 Mary has 26 blue shirts and 36 brown shirts. If she gives away half of her blue shirts and a third of her brown shirts, how many shirts does she have left? How many blue shirts does Mary give away? ** Mary gives away 26/2 = <<26/2=13>>13 blue shirts. How many brown shirts does Mary give away? ** Mary gives away 36/3 = <<36/3=12>>12 brown shirts. How many blue shirts does Mary have left? ** Mary has 26-13 = <<26-13=13>>13 blue shirts left. How many brown shirts does Mary have left? ** Mary has 36-12 = <<36-12=24>>24 brown shirts left. How many shirts does she have left? ** Mary has 13+24 = <<13+24=37>>37 shirts left. #### 37 Lake Crystal has twenty percent fewer frogs than Lassie Lake. If Lassie Lake has forty-five frogs, how many frogs are there in total in the two lakes? How many frogs are there in Lake Crystal? ** Lake Crystal has twenty percent fewer frogs than Lassie Lake, a total of 20/100*45=<<20/100*45=9>>9 frogs How many frogs are there in total in the two lakes? ** The total number of frogs in Lake Crystal is 45-9=<<45-9=36>>36 How many frogs are there in total in the two lakes? ** Together, the two lakes have 36+45=<<36+45=81>>81 frogs #### 81 Johann and two friends are to deliver 180 pieces of certified mail. His friends each deliver 41 pieces of mail. How many pieces of mail does Johann need to deliver? How many pieces of mail do his friends deliver? ** Friends = 41 * 2 = <<41*2=82>>82 How many pieces of mail does Johann need to deliver? ** Johann = 180 - 82 = <<180-82=98>>98 How many pieces of mail does Johann need to deliver? ** Johann must deliver 98 pieces of mail. #### 98 Annabelle collected a weekly allowance of $30. She spent a third of it buying junk food, then spent another $8 on sweets. Out of guilt she decides to save the rest. How much did she save? How much did Annabelle spend on junk food? ** A third of $30 is $30*(1/3) = $<<30*(1/3)=10>>10 How much did Annabelle spend on junk food? ** She spent $10 from $30 leaving $30-$10 = $20 How much did Annabelle spend on sweets? ** She spent another $8 leaving $20-$8 = $<<20-8=12>>12 which she saved #### 12 An elevator is on the 9th floor. It goes down 7 floors, then up 3 floors, then up 8 floors. If the elevator is on the top floor, how many floors are there in the building? How many floors did the elevator go down? ** From the 9th floor, the elevator went down to the 9 - 7 = <<9-7=2>>2nd floor. How many floors did the elevator go up? ** Then went up to the 2 + 3 = <<2+3=5>>5th floor. How many floors are there in the building? ** Then, went up to the 5 + 8 = <<5+8=13>>13th floor; hence there are 13 floors in the building. #### 13 The buyers who came to Mr. Brandon's shop yesterday bought goods worth $80. If 2/5 of the total amount of sales Mr. Brandon made yesterday were credit sales, and the rest were cash sales, how much did Mr. Brandon get from cash sales? How much were the credit purchases? ** 2/5 of the total amount of sales Mr. Brandon made yesterday, which were credit purchases, were worth 2/5*$80=$<<2/5*80=32>>32 How much were the cash sales? ** The cash sales that Mr. Brandon made yesterday was $80-$32=$<<80-32=48>>48 #### 48 Jessie invited 4 friends over to play. They made muffins for a snack and Jesse wants to divide them equally between herself and her friends. If they made 20 muffins in total, how many will each person have? How many people will share the muffins? ** There will be a total of 1 + 4 = <<1+4=5>>5 people who will share the muffins. How many muffins will each person have? ** Each of them will have 20/5 = <<20/5=4>>4 muffins. #### 4 John hits 70% of his free throws. For every foul he gets 2 shots. He gets fouled 5 times a game. How many free throws does he get if he plays in 80% of the 20 games the team plays? How many games does John play in? ** John plays in 20*.8=<<20*.8=16>>16 games How many fouls does John get? ** That means he gets fouled 16*5=<<16*5=80>>80 fouls How many free throws does John get? ** So he gets 80*2=<<80*2=160>>160 foul shots How many free throws does John make? ** So he makes 160*.7=<<160*.7=112>>112 free throws #### 112 Ludwig works 7 days a week and he usually works half of the day during Friday, Saturday, and Sunday. If his daily salary is $10, how much does he earn every week? How much does Ludwig earn from Monday to Thursday? ** Ludwig earns a total of $10 x 4 = $<<10*4=40>>40 from Monday to Thursday. How much does Ludwig earn on Friday, Saturday, and Sunday? ** He earns $10/2= $<<10/2=5>>5 per day on Friday, Saturday, and Sunday. How much does Ludwig earn on Friday, Saturday, and Sunday? ** So, his total salary for Friday, Saturday, Sunday is $5 x 3 = $<<5*3=15>>15. How much does Ludwig earn every week? ** Therefore, his total weekly salary is $40 + $15 = $<<40+15=55>>55. #### 55