A man travels some distance at a speed of 20 km/hr and returns at a speed of 15 km/hr. If the total time taken by him is 3 hrs 30 min, the distance is
Let the distance travelled by a man be D km According to the question, Total time taken = 2 hrs 30 min = 3(30/60) = 7/2 hours Total time = T1 + T2 D/20 + D/15 = 7/2 (3D + 4D)/60 = 7/2 7D/60 = 7/2 D = 30 km
(√121 + √196) × 7 =? × 5
120% of 250 + 110 + 135 ÷ 5 = ?
(43/10) + (4.2/1.2) - (2.7/3) = (?/4) + (2.7/6.0)
2852 + 7848 + 2962 + 4268 = ? – 1460
280 – 70 × 14 ÷ 5 = ? – 21 of 3
40% of (34 x 25) + 105 = ?
12.5% of 384 - 16.66% of 66 = √16 + √? + 22
Find the simplified value of the given expression
240 × 2.5 + 65 × 2/13 = ?2 - √225
22 + 60 × 3 ÷ 12 = ?
