The present age of Kiran five times the age of Suji. After 10 years Kiran will be three times as old as Suji. Find out the present ages of Kiran and Suji?
  • a)
    25 years, 5 years
  • b)
    30 years, 6 years
  • c)
    35 years, 7 years
  • d)
    50 years, 10 years
Correct answer is option 'D'. Can you explain this answer?

Ayshwarya R Srivatsa answered  •  12 hours ago
Let Suji age be x yr And Kiran age be 5x yr In 10 yrs, Suji will be x+10 and Kiran be 5x+10 Thus, According to condition 5x+10=3(x+10) 5x+10=3x+30 5x-3x=30-10 2x=20 x=10 Thus, Kiran age is 5x=5(10)=50 Hence, Kiran age is 50 yrs and Suji age is 10 yrs.

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2 men or 3 boys can do a piece of work in 14 days working 6 hours each day. In how many days 6 men and 9 boys will complete a work twice as large working together 2 hours each day?
  • a)
    12 days
  • b)
    14 days
  • c)
    16 days
  • d)
    15 days
  • e)
    10 days
Correct answer is option 'B'. Can you explain this answer?

Physics Classes answered  •  12 hours ago
B) 14 days Explanation: 2 m = 3 b So 1m = 3/2 b 6m + 8b = 6 * (3/2) b + 9b = 18 b So we have to find the number of days for 18 boys 3 boys do 1 work in 14 days working 6 hours, let 18 boys do twice work in x days working 2 hrs each day, then B1*D1*H1*W2 = B2*D2*H2*W1
3*14*6*2 = 18*x*2*1 Solve x = 14 days

If 3(x – y) = 27 and 3(x + y) = 243, then x is equal to:
  • a)
    0
  • b)
    2
  • c)
    4
  • d)
    6
Correct answer is option 'C'. Can you explain this answer?

Future Foundation Institute answered  •  12 hours ago
3x – y = 27 = 33    ⇔    x – y = 3 ….(i)
3x + y = 243 = 35    ⇔    x + y = 5 ….(ii)
On solving (i) and (ii), we get x = 4.

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