During his 12 minute exercise session, Brain spent 35% of his time doing sit ups. How many seconds of Brain's exercise session were spent doing sit-ups?

Andrew works out for 30 minutes every other days. If he spends 35% of his workout time one day waiting for the weight rack, how many seconds of that day's workout did he spend waiting for the weight rack?

The above bar graph shows the number of calories burned per minute for three types of exercise , assuming that the exercise is performed vigorously. Jackie spent an hour exercising vigorously . She spent twice as much time doing aerobics as she did walking, and 1 1/2 times as much time swimming as she did aerobics . According to the graph, how many calories did Jackie expect to burn during that hour of exercise ?

Siddhi is practising hard to win the inter-school marathon One day her instructor measured and recorded the number of her heart beats during her training session in which she did some warm up exercises and then ran. He plotted his recordings in the graph as shown. Select the correct option regarding this.