self Maths Puzzle

P divides his property among his four sons A, B,C and D after donating Rs 20,000 and 10% of his remaining property. The amounts received by the last three sons are in A.P and the amount received by the fourth son is equal to the total amount donated. The first son receives as his share Rs 20,000 more than the share of second son. The last son received Rs 1 lakh less than the eldest son. 2. Common Data Question 1/2. What is the total donation made by P?
option
A. Rs 55,000
B. Rs 65,000
C. Rs 75,000
D. Rs 80,000

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self Other Question
1 of the two students,while solving Q.E in x,copied the constant term incorrectly and got the roots 3 and 2.The other copied the constant term and coefficient of x square correctly as -6 and 1 resp.The correct Roots are:
option
a. 3,-2
b. -3,2
c. -6,-1
d. 6,-1.
 In an A.P, the 12th term is 7 times the 2nd term and the 8th term is 3 more than 10 times the first term. What is the 5th term of the G.P whose first term is the first term of A.P and whose common ratio is equal to the common difference of the A.P.
option
A. 162
B. 144
C. 156
D. 136