Question
If Ramesh covers a certain distance at 12 km/h, he
arrives 5 hours later than the scheduled time. If he travels at 20 km/h, he reaches 2 hours earlier than the scheduled time. What is 50% of the distance travelled by Ramesh?Solution
ATQ:
Let the distance travelled by Ramesh = ‘d’ km
Let the usual time taken by Ramesh to travel this distance = ‘t’ hours We have,
d ÷ 12 = t + 5…………………..(i)
Also, d ÷ 20 = t – 2…………………(ii) Equation (i) – Equation (ii), we get
(d/12) – (d/20) = t + 5 – (t – 2) = 7
Or, (5d – 3d) ÷ 60 = 7
So, d = (60 × 7) ÷ 2 = 210 So, 50% of the distance travelled by Ramesh = 210 × 0.5 = 105 km
52, 77, 127, ?, 302, 427
What value should come in the place of (?) in the following number series?
4, 10, 22, 46, ?, 190
What value should come in the place of (?) in the following number series?
251, 272, 296, ?, 353, 38615.975 ×27.825 + (76.01)² + 12.98×18.426 = ?+ (79.09)²
What will come in place of the question mark (?) in the following series?
146, 122, ? , 74, 50, 26
123, 122, 114, 87, ?, -102
What will come in the place of questions (?) mark in the following questions.
1279, 1265, ? , 1225, 1193, 1149
The question below is based on the given series I. The series I satisfy a certain pattern, follow the same pattern in series II and answer the questions...
1221,     1100,     1000,     919,       ?
...25   25   37.5   ?   328.125   1804.6875
Relevant for Exams:
