Advertisements
Advertisements
प्रश्न
Every 3 months Tamilselvan deposits ₹ 5000 as savings in his bank account. In how many years he can save ₹ 1,50,000
Advertisements
उत्तर
Let the number of years required be x.
| Number of months | 3 months = `3/12 xx 1,50,000` year | x |
| Deposits per month in ₹ | ₹ 5000 | 1,50,000 |
No. of years and deposit are direct proportion as they both increases simultaneously.
`(x_1)/(y_1) = (x_2)/(y_2)`
`(3/12)/5000 = x/(1,50,000)`
`3/12 xx 1,50,000` = x × 5000
x = `37500/5000`
x = `7 1/2` years
He can save ₹ 1,50,000 in `7 1/2` years.
APPEARS IN
संबंधित प्रश्न
In which of the following tables x and y vary directly?
(i)
| a | 7 | 9 | 13 | 21 | 25 |
| b | 21 | 27 | 39 | 63 | 75 |
(ii)
| a | 10 | 20 | 30 | 40 | 46 |
| b | 5 | 10 | 15 | 20 | 23 |
(iii)
| a | 2 | 3 | 4 | 5 | 6 |
| b | 6 | 9 | 12 | 17 | 20 |
(iv)
| a | 12 | 22 | 32 | 42 | 52 |
| b | 13 | 23 | 33 | 43 | 53 |
Fill in the blank in of the following so as to make the statement true:
If u = 3 v, then u and v vary .... with each other.
If the cost of 93 m of a certain kind of plastic sheet is Rs 1395, then what would it cost to buy 105 m of such plastic sheet?
Suneeta types 1080 words in one hour. What is her GWAM (gross words a minute rate)?
A and B can do a piece of work in 12 days; B and C in 15 days; C and A in 20 days. How much time will A alone take to finish the work?
A, B and C can reap a field in \[15\frac{3}{4}\] days; B, C and D in 14 days; C, D and A in 18 days; D, A and B in 21 days. In what time can A, B, C and D together reap it?
6 men can complete the electric fitting in a building in 7 days. How many days will it take if 21 men do the job?
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Area of the walls of a room and the cost of white washing the walls.
Pattern B consists of four tiles like pattern A. Write a proportion involving red dots and blue dots in pattern A and B. Are they in direct proportion? If yes, write the constant of proportion.
The following table shows the distance travelled by one of the new eco-friendly energy-efficient cars travelled on gas.
| Litres of gas | 1 | 0.5 | 2 | 2.5 | 3 | 5 |
| Distance (km) | 15 | 7.5 | 30 | 37.5 | 45 | 75 |
Which type of properties are indicated by the table? How much distance will be covered by the car in 8 litres of gas?
