book Maths Puzzle Numerical Ability

How do you solve these problems? z/20+1/12=z/15-1/10 and 4w+23/5=19-w/7

Read Solution (Total 0)

book Other Question

1/2 kids have left party
18 kids are standing around
1/3 are dancing
how many kids were originally at party Marvin can shovel the driveway of his family home in 30 minutes. It takes his wife, Nina, 45 minutes to shovel the same driveway. How long would it take to shovel the driveway if they were both working together to clear it?