Southeast Bank Ltd. || Probationary Officer (15-02-2020) || 2020

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Let, us depicit a figure accourding to question

Here, number of people who had none of the three

=[Total-(both+all of the three)]

=[200-(10+30+10+50+10+20+60)]

=[200-190]

=10

10 candidates had none of the three. (answer)

Let, he took x hours at 60 mph.

He took (5-x) hours at 80 mph.

According to question

60x+80(5-x)=340

=60x+400-80x=340

=20x=400-340=60

x=6020=3 Jane took 3 hours at 60 mph.(answer)