Question
On river, Q is the mid-point between two points P and R
on the same bank of the river. A boat can go from P to Q and back in 12 hours and from P to R in 16 hours 40 min. How long would it take to go from R to P?Solution
Time taken to go from P to R by boat = 16 hrs + 40 min Time taken to go from P to Q by boat = (16 hr + 40 min)/2 = 8 hrs + 20 min Time taken to go from P to Q and back by boat = 12 hrs Time taken to come back from Q to P = 12 hrs - (8 hrs + 20 min) = 3 hr + 40 min Time taken to come back from R to P = 2 (3 hr + 40 min) = 7 hr + 20 min = 7(1/3) hrs
[(√576 × √144) ÷ √1296]2 = ? ÷ 3
Evaluate:
(24/6) + 3 × (5 - 2)2
What will come in the place of question mark (?) in the given expression?
{(16 × 25) ÷ 32} × 12 = ? – 200
Find the value of 40 ÷ 5 of 6 × [3 ÷ 6 × (12 – 6)] – (15 ÷ 3 of 30):
Calculate the value of x2, if [(8 + 62) ÷ 4 of x + 2.5 × 5 = 42 + 20% of 10].
- What will come in place of (?), in the given expression.
144 ÷ √36 + 13² – 100 = ? √? = 120 - 102 + ∛125
360 ÷ 9 + 15 % of 200 + ? * 10 = 45 * √25
- Determine the value of following expression:
[{(148 + 32) ÷ 9}% x 1350] + 19 280 – 70 × 14 ÷ 5 = ? – 21 of 3
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