Advertisements
Advertisements
प्रश्न
Write the mean and extreme terms in the following ratios and check whether they are in proportion.
78 litre is to 130 litre and 12 bottles is to 20 bottles
Advertisements
उत्तर
78 : 130, 12 : 20
Product of the means = 78 × 20
= 1560
Product of the extremes = 130 × 12
= 1560
a × d = b × c
∴ They are in proportion
APPEARS IN
संबंधित प्रश्न
Check whether the following numbers are in continued proportion.
2, 4, 8
An electric pole casts a shadow of length 20 m at a time when a tree 6 m high casts a shadow of length 8 m. Find the height of the pole.
35 inland letters cost Rs 87.50. How many such letters can we buy for 315?
Choose the correct statement:
If a, b, c are in continued proportion, prove that: (a + b + c) (a – b + c) = a2 + b2 + c2
If a, b, c, d are in continued proportion, prove that: `(a^3 + b^3 + c^3)/(b^3 + c^3 + d^3) = a/d`
Find the missing number in the box in the proportions:
`3/8 = square/20`
Find the missing number in the box in the proportion:
`square/45 = 16/40 = 24/square`
The table, given below, shows the values of x and y, where x is proportional (directly proportional) to y.
| x | A | 24 | 15 |
| y | 12 | B | 20 |
The values of A and B are:
A picture frame’s length and width are in the ratio 4 : 3. If the length is 28 cm, what is the width?
