Question
At present Meena is eight times her daughter’s
age. Eight years from now, the ratio of the ages of Meena and her daughter will be 9 : 2 respectively. What is the Meena’s present age?Solution
Let the age daughter’s age = x Meena’s age = 8x According to the question, (8x+8)/(x+8) = 9/2 ⇒ 16x + 16 = 9x + 72 ⇒ 16x - 9x = 72 – 16 ⇒ 7x = 56 ⇒ x = 8 ∴ Meena’s present age = 8 × 8 = 64 years.
What value should come in place of (?) in the given expression.
450 Γ· 9 + 75% of 160 β 64 Γ· 4 = ?
2/5 of 3/4 of 7/9 of 14400 = ?
7/3 of 4/5 of 15/56 of ? = 83
[564 + 32 of 18 Γ 9 Γ· 12 + 162 ] Γ· 4 = ?
What should come in place of (?) question mark in the given expression.
Β (25% of 320) + (3/8 of 400) β 30 = ?
45% of 360 - 160 + ? = β324
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
Find the simplified value of the following expression:
[{12 + (13 Γ 4 Γ· 2 Γ· 2) Γ 5 β 8} + 13 of 8]
18 Γ 15 + 86 β 58 =? + 38
Β
√(24²+285-8²-172) = ?²