Question

a) 4
b) -1/3
c) 5
d) 1
[6]
Q.2] Solve the following:
1) For certain simultaneous equations in x and y, if
i) D = 12, D = 4, find the value of x
ii) D = -3, D = 6, find the value of y.
2) Find the value of ( x-y), if
i) 3x + 4y = 11; 4x + 3y = 10
ii) 7x - 8y = 26; 4x - 5y = 14
3) Two numbers differ by 3. The sum of twice the smaller number and thrice the greatest number is
19. Find the numbers.
Q.3] Solve the following activity:
1) The sum of the present ages of Manish and Savita is 31 years. 3 years ago Manish's age was fou
times Savita's age at that time. Find their present age.
Sol : Let Manish's present age be x years and Savita's age be y years.​

Answer 1

Answer:

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