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Answers
Step-by-step explanation:
hey there
let the present age of hirath be x..
after 20 it became triple = 3 × x = 3x...
x + 20 = 3x
3x - x = 20.....
2x = 20 / 2 = 10..
Present age of hirath is 10 years ....
2) let the number of note be X.....
So ratio can be written as 1x : 2x : 3x = 1600
1x × (10) + 2x × (20) + 3x × ( 50)..
10x + 40x + 150x = 1600.
200x = 1600...
x = 1600 ÷ 200
x = 8..
no of 10 rupees note = 10 × 8 = 80...
no. of 20 rupees note = 20 × 8 = 160....
no. of 50 rupees note = 50 × 8 = 400....
total no. of note = 80 + 160 + 400 = 320...
let the ratio be 2x, 3x and 4x...
2x × (50) + 3x × ( 100) + 4x × (200)
= 100x + 300x + 800x
= 1200x = 6000...
x = 6000 ÷ 1200 = 5...
no. of 50 rupees note = 50 × 5 = 250.......
no. of 100 rupees note = 100 × 5 = 500.........
no. of 200 rupees note = 200 × 5 = 1000. .........
total no. of note = 1750.....
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