pls help me on these 3 questions


1.Ali,bala ,clyde and dingyi shared a box of pens.ali received 20% of the total number of pens which bala ,clyde and dingyireceived altogether .bala received 50% of the total number of pens which ali,clyde and dingyi received altogether.clyde received 80% of the total number of pens which ali,bala and dingyi received altogether.dingyi received 6 pens.how many pens were in the box at first?

2.jolene and penny had a sun of money.jolene gave penny 0.4 of her money .penny then gave jolene 1/2 of her money.in the end jolene had three times the amount of money that penny had.if jolene gave penny $125 more than what penny gave jolene,how much money did jolene have at first?

3.Mrs.raju bought 20 bottles of milk and 5 boxes of cornflakes from supermarket.if she had bought these items at 20% discount,the amount of money she saved could buy another 3 more boxes of cornflakes at the usual price.the usual price of a bottle of milk was 2.15.what was the usual price of a box of cornflakes?

zara had 70 more dresses than skirts.she sold 3/4 of the dresses and 3/5 of the skirts.she sold 126 more dresses than skirts .what fraction of the remaining clothes that zara had were skirts?