1.Every morning Kevin has to reach school by 8am. If he travels at 70Metres per minute, he would arrive 10 minutes earlier. If he travels at 60 metres per minute, he would arrive 8 minutes earlier. Given that he leaves home for school after 7 am, find the exact time he leaves for school.

2The prices of 3 types of snacks, a chocolate bar, a potato pie and a piece of cake were $1.50, $2.10 and 3.30 respectively. Ben had $14 to spend on these snacks and he bought the snacks in such a way to maximize his spending.What was the amount he spent?

How many 3-digit numbers have a remainder of 7,2 and 3 when divided by 9, 5and 4 respectively? List all such numbers.

Samuel wants to distribute 174 identical marbles into a number of boxes. Given that each box can have 12 to 22 marbles and that each box contains different number of marbles, find the number of different ways to do the task