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Syllabus
Find the marked price.
A part of RS 1500 was lent at 10 % per annum and the rest at 7 % per annum simple interest.The total interest earned in 3 years was RS 396. What was the sum lent at 10 % p.a.?
23. Chandani purchased some parrots. 20% flew away and 5% died. Of the remaining, 45% were sold. Now 33 parrots remain. How many parrots had Chandani purchased?
6p3+5p2+4 by (2p+1)
5. Simplify:
(i) 179 × 179 – 21 × 21
(ii) 1.62 × 1.62 – 0.38 × 0.38
(iii)
(iv)
3y^2-8y+7 from 9y^2+5y+6
7+10(x-y) -8(x-y)^2