the certain amount of money amount to rupees 4400 in 2 years and to Rs 4600 in 3 years find the principal and the rate of interest
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amount after 2 years 4400
amount after 3 years 4600
therefore interest for 1 year 4600 subtract 4400
= 200
amount = P+I
4400 = P + interest for 2 years
= P+ 200 × 2
= P+ 400 = 4400
P = 4400 subtract 400
4000
Now rate SI×100 ÷ P×T
200 × 100÷4000 ×1
= 5 %
amount after 3 years 4600
therefore interest for 1 year 4600 subtract 4400
= 200
amount = P+I
4400 = P + interest for 2 years
= P+ 200 × 2
= P+ 400 = 4400
P = 4400 subtract 400
4000
Now rate SI×100 ÷ P×T
200 × 100÷4000 ×1
= 5 %
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