*Hello and welcome to ***exampundit**. Here is a set of Data Interpretation Quiz on Boats & Streams based on the pattern of SBI PO Mains 2017.

**Data Interpretation Quiz on Boats & Streams**

**(Speed in kmph)**

**Total distance traveled= 1800 km**

1. What is the difference of time taken by boat A to travel 240 km downstream and boat B to travel 120 km upstream?

1)20

2) 30

3)40

4) 50

5) None of these

Answer & Solutions

**Option:** 1

**Explanation:** Downstream speed of boat A= 14 + 10

= 24 kmph

24 km distance travelled in 1 hr by A

240 km distance travelled in= 240/24 = 10 hr

Upstream speed of boat B= 10 – 6

= 4 kmph

4 km distance travelled by B in 1 hr

120 km distance travelled in= 120/4= 30 hr

Diff= 30 – 10 = 20 hr

2. What is the total time taken by Rahul to reach his destination by boat A and B both downstream and upstream?

1) 86.90

2) 86.455

3)173.93

4)172.92

5) None of these

Answer & Solutions

**Option:** 2

**Explanation:** Total distance travelled by Rahul= 1800 km

Distance covered by A= 1800 * 40/360

= 200 km

Time taken by boat A downstream = 200/( 10+14) = 8.33 hr

Upstream= 200/ ( 14-10) = 50 hr

Total time by A= 50+8.33= 58.33 hr

Distance covered by B= 1800 * 18/360

= 90 km

Time taken by boat B downstream= 90/ (10+6) = 5.625hr

Upstream= 90/(10-6) = 22.5 hr

Total time by B= 22.5+5.625= 28.125 hr

Total time taken by boat A and B= 58.33+28.125 = 86.455 hr

3. If the speed of boat D is increased by 50% and the speed of stream decreases by 25% then what is the difference between time taken by the boat D upstream and boat C downstream?

1) 0.50

2) 1.80

3) 0.90

4) 2

5) None of these

Answer & Solutions

**Option:** 3

**Explanation:** Speed of boat D= 18 kmph

After increasing 50% the speed of boat D= 18 * 150/100 = 27 kmph

Speed of stream= 10 kmph

After decreasing 25% the speed is= 10 * 75/100 = 7.5 kmph

Distance covered by boat D= 1800 * 16/360 = 80 km

Time taken in upstream= 80/ (27-7.5) = 4.10 hr

Distance covered by boat C= 1800* 26/360 = 130 km

Time taken in downstream= 130/ (14+12) = 5 hr

Diff= 5-4.10 = 0.9 hr

4. If the speed of boat E increases by 15% then what is the approximate time taken by Rahul to reach 500 km by boat E upstream?

1) 35

2) 36

3) 37

4) 38

5) None of these

Answer & Solutions

**Option:** 5

**Explanation:** Speed of boat E= 20 kmph

After increasing 15% the speed is= 20 * 115/100 = 23 kmph

Upstream speed of boat E= 23 – 10 = 13 kmph

Time taken to reach 500 km by boat E in upstream= 500/ 13= 38.46 hr ~ 39 hr

5. What is the ratio of the time taken by boat A upstream to the time taken by boat C downstream?

1) 2:13

2) 3:10

3) 4:15

4) 3:16

5) None of these

Answer & Solutions

**Option:** 1

**Explanation:** Speed of boat A= 14 kmph

Speed of stream= 10 kmph

Upstream speed of boat A= 14-10 =4kmph

Speed of boat C= 14 kmph

Speed of stream= 12 kmph

Downstream speed of boat C= 14 + 12 = 26 kmph

Ratio= 4:26 = 2: 13

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