Question

2. Mang Teban bought 15 mangoes in the market. If the number of mangoes is six less than thrice

the number of apples of Mang Jose, how many apples did Mang Jose buy?

3. Jack's age is twice as old as Kaye. If the sum of their ages is 27, how old are they?

I need to submit it by tomorrow please help!

Answer 1

Explanation:

2.

x = number of apples

15 (mangoes) = 3x - 6

21 = 3x

x = 7

Mang Jose bought 7 apples.

3.

x = Jack's age

y = Kaye's age

x + y = 27

x = 2y

so, we simply use the identity of the second equation in the first equation :

2y + y = 27

3y = 27

y = 9

x = 2y = 2×9 = 18

Jack is 18 years old.

Kaye is 9 years old.

Answer 2

Jack’s age: j
Kaye’s age: k
j=2k
j+k=27
use 2k instead of j => 3k=27 => k=9
27-9=18 => j=18