A number is more than 2 / 5 of 25. What's 3 / 4 of 10? What's the difference between 10 times the reciprocal of 5 / 7 and half of 7 / 8?

A number is more than 2 / 5 of 25. What's 3 / 4 of 10? What's the difference between 10 times the reciprocal of 5 / 7 and half of 7 / 8?

Two fifths of 25 is 10
10+10=20
Three quarters of 20 is 15
The reciprocal of five out of seven is seven out of five
10 times of 7 / 5 is 70 / 5 = 14
Half of seven in eight is seven in 16
14-7 / 16 = 9 / 13

A number is 2.4 more than the difference between 3.6 and 1.25. Find the number. (result of formula)

3.6-1.25+2.4=4.75

A number is one fifth more than 25. What's the number?

The number is X
(x-25)/25=1/5
5x-125=25
5x=150
x=30

(1) What's the quotient of the difference between five ninths and one sixth divided by their sum? (2) 25% of a number is 1.2 less than one third of it. What's the number?

（1）
（5/9-1/6）÷（5/9+1/6）
=7/18÷13/18
=7/13
（2）
What's the number
1.2÷（1/3-25%）
=1.2÷（4/12-3/12）
=1.2÷1/12
=14.4
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A number is five more than 25 percent of it, and that number is five···
I don't know what the process is,

It can't be 60
5÷(1-25%)=20/3
A: that's 20 / 3

What is the quotient of 2.4 divided by 4 / 5 minus 1.6

［(4/5-1.6)×1/4］÷2.4
=(-0.8))×1/4÷2.4
=(-0.2)÷2.4
=-1/12

What is the quotient of 8.4 minus 5.2 minus 1.6

1.6/(8.4-5.2)
=1.6/3.2
=0.5

What's the difference between 4 / 5 divided by 2 / 5 and 1 / 5, and the quotient minus 1 / 6?

(2/5-1/5)÷4/5-1/6=1/4-1/6=1/12

What's the quotient of subtracting three 5 / 6 from three and dividing the difference by 1 / 2

（3-3*5/6）/（1/2）
=（3-5/2）*2
=（1/2）*2
=1

Use the four numbers of 65, 12, 23 and 15, plus +, -, ×, △ and parentheses to form a four mixed operation question, so as to maximize the result (numbers and symbols are not used repeatedly)___ ．

So the answer is: 15 △ 65 - (23 + 12)] = 15 △ 130, = 450