Question
Nora claims her age is between 18 and 22 years. Her
grandmother says Nora's age is between 20 and 24 years. Her aunt thinks her age is between 19 and 21 years. Determine the average of all possible ages of Nora if all are correct.Solution
ATQ, According to Nora, her age can be 19, 20, 21, or 22 years. According to her grandmother, her age can be 20, 21, 22, 23, or 24 years. According to her aunt, her age can be 20 or 21 years. Finding the common ages from all ranges: Common ages: 20, 21 Required average: (20+21)/2 = 20.5 yrs
What value should come in place of (?) in the given expression.
450 ÷ 9 + 75% of 160 − 64 ÷ 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 × 9 ÷ 12 + 162 ] ÷ 4 = ?
What should come in place of (?) question mark in the given expression.
(25% of 320) + (3/8 of 400) − 30 = ?
45% of 360 - 160 + ? = √324
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
Find the simplified value of the following expression:
[{12 + (13 × 4 ÷ 2 ÷ 2) × 5 – 8} + 13 of 8]
18 × 15 + 86 – 58 =? + 38
√(24²+285-8²-172) = ?²
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