at what time between 4 and 5 oclock will the hands of, Rances & Games of Skill, General Mathematics

Question:At what time between 4 and 5 o'clock will the hands of a clock be at right angle ?

Answer At 4 o'clock the minute hand will be 20 min.spaces behind the hour hand.

Now, when the two hands are at right angles, they are 15 min. spaces apart.

So they are at right angles in following two cases.

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At what time between 4 and 5 o'clock will the hands of a clock be at right angle ?

Question:At what time between 4 and 5 o'clock will the hands of a clock be at right angle ?

Answer At 4 o'clock the minute hand will be 20 min.spaces behind the hour hand. Now, when the two hands are at right angles, they are 15 min. spaces apart. So they are at right angles in following two cases.