Page 154 - NUMINO Challenge_M2

Type Study This year After After After After After
1 year 2 years 3 years 4 years 5 years

Flowers 78 9 10 11 12
for June
5 6 7 8 9 10
Flowers
for Julia

Flowers This year After After After After After
received 7+5 1 year 2 years 3 years 4 years 5 years
=12 8+6 9+7 10+8 11+9 12+10
Flowers =14 =16 =18 =20 =22
gathered
12 12+14 26+16 42+18 60+20 80+22
=26 =42 =60 =80 =102

In 4 years, June and Julia will have collected 80 flowers, and their mother's
age will be 40. 80=40 2, so it will be 4 years later.

Problem solving

1 The following table shows the possible ages of Haley and her brother this year.

Haley 1 2 3 4 5

Brother 11 10 9 8 7

The following table shows the possible ages of Haley and her brother in 2 years.

Haley's age 2 years later 3 45 6 7
Brother's age 2 years later 13
39 12 11 10 9
Product of ages
48 55 60 63

The product of their ages is 60 when Haley’s age is 6 and her brother’s age is
10, so this year, Haley is 4 years old.

2 Every day, there are two less oranges and one less apple. The following table

shows the number of each fruit left each day.

Mon Tue Wed Thur Fri Sat Sun
5 31
Oranges 13 11 9 7 5 43

Apples 9 8 7 6

On Friday, the number of oranges and apples will both be 5.

17Answer Key