(1) how much is 4 / 3 of 30? (2) how much is 5 / 1 of a number? (3) number a is 600, number B is 5 / 1 more than number a, how much is number B? (4) number a is 600, number B is 5 / 1 less than number a, how much is number B? (5) number a is 600, number a is 5 / 1 more than number B, how much is number B? (6) number a is 600, number a is 5 / 1 less than number B, how much is number B?,

(1) how much is 4 / 3 of 30? (2) how much is 5 / 1 of a number? (3) number a is 600, number B is 5 / 1 more than number a, how much is number B? (4) number a is 600, number B is 5 / 1 less than number a, how much is number B? (5) number a is 600, number a is 5 / 1 more than number B, how much is number B? (6) number a is 600, number a is 5 / 1 less than number B, how much is number B?,

30×4/3＝2/45
15÷5/1＝75
600×（1+5/1）＝720
600×（1－5/1）＝480
600÷（1+5/1）＝500
600÷（1－5/1）＝750
Thank you

Calculation: (1) 15 ° 30 ′ =________ ； (2)25.35°________ ； (3)6.75°＝________ ； (4)36°48′36″________ ．
Calculation: (1) 15 ° 30 ′ =________ ；(2)25.35°________ ；(3)6.75°＝________ ；(4)36°48′36″________ ．

(1)15°30′＝___ 15.5°_____ ；
(2)25.35°____ =25°21'____ ；
(3)6.75°＝___ 6°45'_____ ；
(4)36°48′36″__ =36°48.6'=36.81°______ ．

1. If 25% of a number is 15 less than 4 / 3 of 120, find the number. If 2 / 3 of 2.27 is 6 less than 30% of a number, find the number

1、（120×4/3-15）÷25%=580
2、（27×2/3+6）÷30%=80
Square method
1. Let this number be x, then
120×4/3-X×25%=15
The solution is x = 580
2. Let this number be x, then
X×30%-27×2/3=6
The solution is x = 80

1. 3 / 4 of a number is 15 more than 40% of 30. What's the difference between 2.25 4 / 5 minus 75% of 12?

1、（30×40%+15）÷3/4=36
2、25×4/5—12×75%=11