Question

Help me pls!!!! I need the the answer!!!

Answer 1

Explanation:

Red apples : green apples = 13 : 7

Number of red apples = 13x

Number of green apples = 7x

Number of red apples sold = 60% of 13x

Remaining red apples = 40% of 13x

= 0.4 * 13x

= 5.2x

Number of green apples sold = 55

Remaining green apples = 7x - 55

After selling, ratio

Red apples : green apple = 13 : 12

5.2x : 7x -55 = 13:12

`(5.2x)/(7x-55) = (13)/(12)`

Cross multiply,

12*5.2x =13 * (7x -55) {use distributive rule}

62.4 x = 91x - 715 {add 715 to both sides}

62.4x + 715 = 91x {subtract 62.4 from both sides}

715 = 91x - 62.4x

715 = 28.6x

28.6x = 715

x = 715/28.6

x = 25

Number of red apples = 13x = 13*25 = 325

Number of green apples = 7x = 7 * 25 = 175

b) Number of red apples left = 5.2x = 5.2 *25 = 130

Number of red apples bought now =
`(3)/(10)*130`

= 3*13 = 39

Number of red apples she had at the end = 39 + 130 = 169