Page 121 - NUMINO Challenge_D2
P. 121
Creative Thinking
1 It takes four days for A, six days for B, and 12 days for C to finish a
piece of work. How many days will it take to finish the work if the three
people, A, B, and C, work together?
2 There is a farm where the grass grows at the same speed every day. If
there are 5 cows, the amount of grass is enough for 4 days. If there are
3 cows, the amount of grass is enough for 8 days. In order to keep a
constant amount of grass, how many cows should be raised in this
farm? The amount of grass that each cow eats is the same every day,
and every cow eats the same amount of grass.
118 NUMINO Challenge D2
1 It takes four days for A, six days for B, and 12 days for C to finish a
piece of work. How many days will it take to finish the work if the three
people, A, B, and C, work together?
2 There is a farm where the grass grows at the same speed every day. If
there are 5 cows, the amount of grass is enough for 4 days. If there are
3 cows, the amount of grass is enough for 8 days. In order to keep a
constant amount of grass, how many cows should be raised in this
farm? The amount of grass that each cow eats is the same every day,
and every cow eats the same amount of grass.
118 NUMINO Challenge D2
