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Start learning 50% faster. Sign in nowM’s present age = 10 years A’s present age = 10 – 4 = 6 years Let the present age of R be x Then, A’s present age = (x -3)/9 Now, according to question (x -3)/9 = 6 x = 54 + 3 x = 57 years
I. 2x 2 + 5x + 2 = 0
II. 4 y 2 = 1
In how many ways can the selection of 4 boys and 3 girls can be made from a group of 6 boys and 6 girls?
I. x2 = 100
II. y2 - 9y + 20 = 0
...I. 3x2 - 14x + 15 = 0
II. 15 y 2 - 34 y + 15 = 0
If the S.P. of Rs 2250 results in a 10% discount on list price, what S.P. would result in a 20% discount on list price?
...If 94*6714 is divisible by 11, where * is a digit, then * is equal to