Advertisements
Advertisements
Question
Arrange the following rational numbers in descending order.
`(4)/(3), (-14)/(5) and (17)/(15)`
Solution
Given numbers : `(4)/(3), (-14)/(5) and (17)/(15)`
The L.C.M. of 3 and 5 is 15.
Thus, numbers are :
`(4)/(3)`
= `(4 xx 3)/(3 xx 5)`
= `(20)/(15)`,
`(-14)/(5)`
= `(-14 xx 3)/(5 xx 3)`
= `(-42)/(15)`,
`(17)/(15)`
Since 20 > 17 > -42, we have `(4)/(3) > (17)/(5) > (-14)/(5)`.
APPEARS IN
RELATED QUESTIONS
Simplify:
Multiply:
Simplify each of the following and express the result as a rational number in standard form:
Divide:
Find the value and express as a rational number in standard form:
The cost of \[7\frac{2}{3}\] metres of rope is Rs \[12\frac{3}{4} .\]
Find its cost per metre.
Arrange the following rational numbers in ascending order.
`(7)/(4), (-6)/(5) and (-5)/(2)`
If `x/y` is a rational number, then y is always a whole number.
If `r/s` is a rational number, then s cannot be equal to zero.
The table shows the portion of some common materials that are recycled.
| Material | Recycled |
| Paper | `5/11` |
| Aluminium cans | `5/8` |
| Glass | `2/5` |
| Scrap | `3/4` |
- Is the rational number expressing the amount of paper recycled more than `1/2` or less than `1/2`?
- Which items have a recycled amount less than `1/2`?
- Is the quantity of aluminium cans recycled more (or less) than half of the quantity of aluminium cans?
- Arrange the rate of recycling the materials from the greatest to the smallest.
