Question

if the angel turned by minute hand in 15 min. in 90° , by how many straight angels will it turn in 1 day

Answer 1

since in 15 minutes angle turned by minute hand is 90°, therefore angle made in 24 hours or 1440 minutes (1 day) = 1440/15 x 90
= 8640 °
Therefore number of right angles in 1 day = 8640 / 90 = 96