Question
Arjun has a sibling who is 5 years older than him. When
Arjun was born, his mother was 30 years old, and his father was 32 years old. If his sibling was 6 years old when another sibling was born, what were the ages of Arjun's parents when the younger sibling was born?Solution
ATQ, Let 'A' be Arjun's age. Arjun's sibling is 'A+5' years old. The younger sibling was born when Arjun's sibling was 6 years old. Since Arjun's sibling is 5 years older than Arjun = A+5=6 Now, solve for 'A' A =6β5 = 1 Therefore, Arjun was 1 year old when the younger sibling was born. So, when Arjun was born , mother's age = 30 years and father's age = 32 years So, the younger sibling was born, 1 year after Arjun: Mother's age = 30 + 1 = 31 years Father's age = 32 + 1 = 33 years Therefore, the ages of Arjun's parents when the younger sibling was born were Mother's age: 31 years and Father's age: 33 years
Evaluate: 360 Γ· [ {18 β (6Γ2)} Γ 5 ] + 72 β 33
(43)² - (28)² + (32)² = ?% of 2500
Evaluate:
β729 + β49 - β16 + 1/β64
What will come in place of (?) in the given expression.
12.5 + 7.75 - 3.6 = ?62 of 8 - 320 Γ· 4 = ?3 + 200
2(1/3) + 2(5/6) β 1(1/2) = ? β 6(1/6)
What will come in the place of question mark (?) in the given expression?
30% of 520 + 16% of 1500 = ? + 244
60% of 120 β ?% of 64 = 20% of 200
35% of 840 + 162Β = ? β 25% Γ 300
20% of 240 + 18% of 200 = ?