Mom bought 20 apples and ate 6 of them. What's the proportion of the remaining apples?

Mom bought 20 apples and ate 6 of them. What's the proportion of the remaining apples?

7/10

1 / 9 of 7 meters and how many parts of 9 meters

1 / 9 of 7 m = 7 / 9 m, (7 / 9)
7 / 9 + 9 = 7 / 9 + 81 / 9 = 90 / 9 = 10 (m)

72 △ 9 × 7 = 72 × () (fraction)

7 out of 9

7.069 is a fraction of 9

7069/9000

45 points=___ Second & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 45 cubic decimeter=___ Cubic meter

45 minutes = 48 seconds; 45 cubic decimeters = 0.045 cubic meters

Simple calculation: 1 / 2 + 3 / 4 + 7 / 8 + 15 / 16 + 31 / 32 + 63 / 64

The original formula = (1-1 / 2) + (1-1 / 4) + (1-1 / 8) + (1-1 / 16) + (1-1 / 32) + (1-1 / 64) = 6 -- 1 / 2-1 / 4-1 / 8-1 / 16-1 / 3-1 / 64 = 6 - (1-1 / 64) = 5 and 1 / 64 ~ if you agree with my answer, please click the [adopt as satisfactory answer] button in time

1 + 1 / 2 + 3 / 4 + 7 / 8 + 5 / 16 + 31 / 32 + 63 / 64

1+1/2+3/4+7/8+15/16+31/32+63/64
=7-（1/2+1/4+1/8+1/16+1/32+1/64）
=7- 1/2 *[1- 1/2^(6)]/(1-1/2)
=7- 63/64
=385/64

15 / 8 △ (fraction) = () × 0.14 = 8 / 15 = 1

15 / 8 ÷ (15 / 8) = (0) × 0.14 + 8 / 15 = 1

Fraction 8 = fraction 25 = 0.4 = (?) (?) = fraction

8 out of 20 = 10 out of 25 = 0.4 = (2) / (5) = 2 out of 5

Three fourths of the number of meters is 15 meters. How many meters are shorter than 15 meters by one fifth, how many meters are longer than 15 meters by one fifth, and how many meters are longer than 15 meters by one fifth

First question:
15 △ 3 / 4 = 20m
Second question:
15 × (1-1 / 5) = 12m
Third question:
15 + 1 / 5 = 15.2m
Fourth question:
15 + 1 / 5 = 15.2m