1. What is the number that is one sixth more than 30? What is the number that is two and three fourths less than 36?

1. What is the number that is one sixth more than 30? What is the number that is two and three fourths less than 36?

30*（1+1/6）=35
36*（1-3/4）=9

30% of a number is more than one fifth of it. 8. What's the number?
To calculate the formula, you can't use X

8/（30%-1/5）=80

Two thirds of a is equal to four fifths of B. B is () of a and () of B
Did not learn binary linear equation

2 / 3A = 4 / 5B
A = 4 / 5 * 3 / 2 b = 6 / 5 B = 120% B
B = 2 / 3 * 5 / 4 a = 5 / 6 A

Two seventh of the number a is equal to 37.5% of the number B. what is the ratio of number a to number B?

A = B × 2 / 7 = B × 37.5% a = B × 3 / 8 △ 2 / 7 = B × 21 / 16 A: B = 21 / 16 A: B = 21 / 16 A: B = 21 / 16 A: B = 21 / 16 A: B = 21 / 16 a: B = 21 / 16 A: B = 2 / 7 A: B = 2 / 7 A: B = 2 / 7 A: B = 2 / 7 A: B = 2 / 7 A: B = 2 / 7 A: B = 2